NFSD: Fix warnings when NFSD_DEBUG is not defined

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 8670863..cdc406a 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -622,12 +622,20 @@
 	return sid->sequence % SESSION_HASH_SIZE;
 }
 
+#ifdef NFSD_DEBUG
 static inline void
 dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
 {
 	u32 *ptr = (u32 *)(&sessionid->data[0]);
 	dprintk("%s: %u:%u:%u:%u\n", fn, ptr[0], ptr[1], ptr[2], ptr[3]);
 }
+#else
+static inline void
+dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid)
+{
+}
+#endif
+
 
 static void
 gen_sessionid(struct nfsd4_session *ses)