BUG_ON() conversion in fs/nfsd/

This patch converts an if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

fs/nfsd/nfs4xdr.c

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 5446a08..5be0043 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -198,8 +198,7 @@
 		p = new;
 		memcpy(p, argp->tmp, nbytes);
 	} else {
-		if (p != argp->tmpp)
-			BUG();
+		BUG_ON(p != argp->tmpp);
 		argp->tmpp = NULL;
 	}
 	if (defer_free(argp, kfree, p)) {