Fix memory leak in xenconsoled

diff -r ea6d9f29dff5 -r 6de1d7b66c8a tools/console/daemon/io.c
@@ -380,12 +380,21 @@
 	if (!buffer_empty(&d->buffer))
 		return;
 
-	if (d->buffer.data)
+	if (d->buffer.data) {
 		free(d->buffer.data);
-	d->buffer.data = NULL;
-	if (d->tty_fd != -1)
+		d->buffer.data = NULL;
+	}
+
+	if (d->tty_fd != -1) {
 		close(d->tty_fd);
-	d->tty_fd = -1;
+		d->tty_fd = -1;
+	}
+
+	if (d->conspath) {
+		free(d->conspath);
+		d->conspath = NULL;
+	}
+
 	remove_domain(d);
 }