nfs: fix sparse warnings

fs/nfs/nfs4state.c:788:34: warning: Using plain integer as NULL pointer
fs/nfs/delegation.c:52:34: warning: Using plain integer as NULL pointer
fs/nfs/idmap.c:312:12: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:257:6: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:270:6: warning: Using plain integer as NULL pointer
fs/nfs/callback_xdr.c:281:6: warning: Using plain integer as NULL pointer

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index 8ae5dba2d4e5..86147b0ab2cf 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -309,7 +309,7 @@ nfs_idmap_name(struct idmap *idmap, struct idmap_hashtable *h,
         mutex_lock(&idmap->idmap_im_lock);
 
         he = idmap_lookup_id(h, id);
-        if (he != 0) {
+        if (he) {
                 memcpy(name, he->ih_name, he->ih_namelen);
                 ret = he->ih_namelen;
                 goto out;