fs/squashfs/squashfs.h: replace pr_warning by pr_warn

Update the last pr_warning callsite in fs branch
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/squashfs/squashfs.h

@@ -25,7 +25,7 @@
 
 #define ERROR(s, args...)	pr_err("SQUASHFS error: "s, ## args)
 
-#define WARNING(s, args...)	pr_warning("SQUASHFS: "s, ## args)
+#define WARNING(s, args...)	pr_warn("SQUASHFS: "s, ## args)
 
 /* block.c */
 extern int squashfs_read_data(struct super_block *, u64, int, u64 *,