vmalloc.c fix for 2.4.20-pre8-ac2

Hi.

I noticed this when building 2.4.20-pre8-ac2 ...

gcc -D__KERNEL__ -I/usr/src/linux-2.4.20-pre8-ac2/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -fomit-frame-pointer -pipe -mpreferred-stack-boundary=2 -march=i586 -nostdinc -iwithprefix include -DKBUILD_BASENAME=vmalloc -c -o vmalloc.o vmalloc.c
vmalloc.c: In function `get_vm_area':
vmalloc.c:182: warning: passing arg 1 of `kfree' makes pointer from integer without a cast
vmalloc.c:173: warning: `addr' might be used uninitialized in this function

I peek at vmalloc.c shows what looks to be a typo. The variable 'area' is allocated by kmalloc(), and 'addr' is a local variable that hasn't been set. Trying to kfree() it would probably be a bad thing.

Art Haas

@@ -179,7 +179,7 @@
 
 	size += PAGE_SIZE;
 	if (!size) {
-		kfree (addr);
+		kfree (area);
 		return NULL;
 	}
 

They that can give up essential liberty to obtain a little temporary safety
deserve neither liberty nor safety.
 -- Benjamin Franklin, Historical Review of Pennsylvania, 1759