BUG_ON() Conversion in fs/sysfs/

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 4c29ac4..f0b347b 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -175,8 +175,7 @@
 	struct bin_attribute * bin_attr;
 	struct sysfs_symlink  * sl;
 
-	if (!sd || !sd->s_element)
-		BUG();
+	BUG_ON(!sd || !sd->s_element);
 
 	switch (sd->s_type) {
 		case SYSFS_DIR: