From 48b02ecc14dfd6c3ba1a90a90ba41df856c0786b Mon Sep 17 00:00:00 2001
From: Craig Tiller <craig.tiller@gmail.com>
Date: Tue, 21 Apr 2015 13:58:36 -0700
Subject: [PATCH] Add !=NULL

---
 src/core/surface/call.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/surface/call.c b/src/core/surface/call.c
index df93273505c..29498056220 100644
--- a/src/core/surface/call.c
+++ b/src/core/surface/call.c
@@ -1009,7 +1009,7 @@ int grpc_call_recv_metadata(grpc_call_element *elem, grpc_metadata_batch *md) {
 
   lock(call);
   is_trailing = call->read_state >= READ_STATE_GOT_INITIAL_METADATA;
-  for (l = md->list.head; l; l = l->next) {
+  for (l = md->list.head; l != NULL; l = l->next) {
     grpc_mdelem *md = l->md;
     grpc_mdstr *key = md->key;
     if (key == grpc_channel_get_status_string(call->channel)) {