kconfig: trivial - adjust comments in expr.c

index 4aa171b..c840e52 100644
@@ -326,7 +326,7 @@ struct expr *expr_trans_bool(struct expr *e)
 		e->right.expr = expr_trans_bool(e->right.expr);
 		break;
 	case E_UNEQUAL:
-		// FOO!=n -> FOO
+		/* FOO!=n -> FOO */
 		if (e->left.sym->type == S_TRISTATE) {
 			if (e->right.sym == &symbol_no) {
 				e->type = E_SYMBOL;

@@ -375,19 +375,19 @@ static struct expr *expr_join_or(struct expr *e1, struct expr *e2)
 		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
 		    ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_mod) ||
 		     (e1->right.sym == &symbol_mod && e2->right.sym == &symbol_yes))) {
-			// (a='y') || (a='m') -> (a!='n')
+			/* (a='y') || (a='m') -> (a!='n') */
 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_no);
 		}
 		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
 		    ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_no) ||
 		     (e1->right.sym == &symbol_no && e2->right.sym == &symbol_yes))) {
-			// (a='y') || (a='n') -> (a!='m')
+			/* (a='y') || (a='n') -> (a!='m') */
 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_mod);
 		}
 		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
 		    ((e1->right.sym == &symbol_mod && e2->right.sym == &symbol_no) ||
 		     (e1->right.sym == &symbol_no && e2->right.sym == &symbol_mod))) {
-			// (a='m') || (a='n') -> (a!='y')
+			/* (a='m') || (a='n') -> (a!='y') */
 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_yes);
 		}
 	}

@@ -438,29 +438,29 @@ static struct expr *expr_join_and(struct expr *e1, struct expr *e2)
 
 	if ((e1->type == E_SYMBOL && e2->type == E_EQUAL && e2->right.sym == &symbol_yes) ||
 	    (e2->type == E_SYMBOL && e1->type == E_EQUAL && e1->right.sym == &symbol_yes))
-		// (a) && (a='y') -> (a='y')
+		/* (a) && (a='y') -> (a='y') */
 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);
 
 	if ((e1->type == E_SYMBOL && e2->type == E_UNEQUAL && e2->right.sym == &symbol_no) ||
 	    (e2->type == E_SYMBOL && e1->type == E_UNEQUAL && e1->right.sym == &symbol_no))
-		// (a) && (a!='n') -> (a)
+		/* (a) && (a!='n') -> (a) */
 		return expr_alloc_symbol(sym1);
 
 	if ((e1->type == E_SYMBOL && e2->type == E_UNEQUAL && e2->right.sym == &symbol_mod) ||
 	    (e2->type == E_SYMBOL && e1->type == E_UNEQUAL && e1->right.sym == &symbol_mod))
-		// (a) && (a!='m') -> (a='y')
+		/* (a) && (a!='m') -> (a='y') */
 		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);
 
 	if (sym1->type == S_TRISTATE) {
 		if (e1->type == E_EQUAL && e2->type == E_UNEQUAL) {
-			// (a='b') && (a!='c') -> 'b'='c' ? 'n' : a='b'
+			/* (a='b') && (a!='c') -> 'b'='c' ? 'n' : a='b' */
 			sym2 = e1->right.sym;
 			if ((e2->right.sym->flags & SYMBOL_CONST) && (sym2->flags & SYMBOL_CONST))
 				return sym2 != e2->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)
 							     : expr_alloc_symbol(&symbol_no);
 		}
 		if (e1->type == E_UNEQUAL && e2->type == E_EQUAL) {
-			// (a='b') && (a!='c') -> 'b'='c' ? 'n' : a='b'
+			/* (a!='b') && (a='c') -> 'b'='c' ? 'n' : a='c' */
 			sym2 = e2->right.sym;
 			if ((e1->right.sym->flags & SYMBOL_CONST) && (sym2->flags & SYMBOL_CONST))
 				return sym2 != e1->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)

@@ -469,19 +469,19 @@ static struct expr *expr_join_and(struct expr *e1, struct expr *e2)
 		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
 			   ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_no) ||
 			    (e1->right.sym == &symbol_no && e2->right.sym == &symbol_yes)))
-			// (a!='y') && (a!='n') -> (a='m')
+			/* (a!='y') && (a!='n') -> (a='m') */
 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_mod);
 
 		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
 			   ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_mod) ||
 			    (e1->right.sym == &symbol_mod && e2->right.sym == &symbol_yes)))
-			// (a!='y') && (a!='m') -> (a='n')
+			/* (a!='y') && (a!='m') -> (a='n') */
 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_no);
 
 		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
 			   ((e1->right.sym == &symbol_mod && e2->right.sym == &symbol_no) ||
 			    (e1->right.sym == &symbol_no && e2->right.sym == &symbol_mod)))
-			// (a!='m') && (a!='n') -> (a='m')
+			/* (a!='m') && (a!='n') -> (a='y') */
 			return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);
 
 		if ((e1->type == E_SYMBOL && e2->type == E_EQUAL && e2->right.sym == &symbol_mod) ||

@@ -641,7 +641,7 @@ struct expr *expr_transform(struct expr *e)
 	case E_NOT:
 		switch (e->left.expr->type) {
 		case E_NOT:
-			// !!a -> a
+			/* !!a -> a */
 			tmp = e->left.expr->left.expr;
 			free(e->left.expr);
 			free(e);

@@ -650,14 +650,14 @@ struct expr *expr_transform(struct expr *e)
 			break;
 		case E_EQUAL:
 		case E_UNEQUAL:
-			// !a='x' -> a!='x'
+			/* !a='x' -> a!='x' */
 			tmp = e->left.expr;
 			free(e);
 			e = tmp;
 			e->type = e->type == E_EQUAL ? E_UNEQUAL : E_EQUAL;
 			break;
 		case E_OR:
-			// !(a || b) -> !a && !b
+			/* !(a || b) -> !a && !b */
 			tmp = e->left.expr;
 			e->type = E_AND;
 			e->right.expr = expr_alloc_one(E_NOT, tmp->right.expr);

@@ -666,7 +666,7 @@ struct expr *expr_transform(struct expr *e)
 			e = expr_transform(e);
 			break;
 		case E_AND:
-			// !(a && b) -> !a || !b
+			/* !(a && b) -> !a || !b */
 			tmp = e->left.expr;
 			e->type = E_OR;
 			e->right.expr = expr_alloc_one(E_NOT, tmp->right.expr);

@@ -676,7 +676,7 @@ struct expr *expr_transform(struct expr *e)
 			break;
 		case E_SYMBOL:
 			if (e->left.expr->left.sym == &symbol_yes) {
-				// !'y' -> 'n'
+				/* !'y' -> 'n' */
 				tmp = e->left.expr;
 				free(e);
 				e = tmp;

@@ -685,7 +685,7 @@ struct expr *expr_transform(struct expr *e)
 				break;
 			}
 			if (e->left.expr->left.sym == &symbol_mod) {
-				// !'m' -> 'm'
+				/* !'m' -> 'm' */
 				tmp = e->left.expr;
 				free(e);
 				e = tmp;

@@ -694,7 +694,7 @@ struct expr *expr_transform(struct expr *e)
 				break;
 			}
 			if (e->left.expr->left.sym == &symbol_no) {
-				// !'n' -> 'y'
+				/* !'n' -> 'y' */
 				tmp = e->left.expr;
 				free(e);
 				e = tmp;