BUG_ON() Conversion in fs/coda/

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/coda/cache.c b/fs/coda/cache.c
index c607d92..5d05271 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -51,7 +51,7 @@
         struct coda_sb_info *sbi;
 
         sbi = coda_sbp(sb);
-        if (!sbi) BUG();
+	BUG_ON(!sbi);
 
 	atomic_inc(&permission_epoch);
 }