reviewer feedback:

src/core/lib/surface/call.cc

@@ -479,7 +479,7 @@ grpc_error* grpc_call_create(const grpc_call_create_args* args,
   }
 
   grpc_core::channelz::Channel* channelz_channel =
-      grpc_channel_get_channelz_channel_node(call->channel);
+      grpc_channel_get_channelz_node(call->channel);
   channelz_channel->RecordCallStarted();
 
   grpc_slice_unref_internal(path);
@@ -525,7 +525,6 @@ static void release_call(void* call, grpc_error* error) {
   GRPC_CHANNEL_INTERNAL_UNREF(channel, "call");
 }
 
-static void set_status_value_directly(grpc_status_code status, void* dest);
 static void destroy_call(void* call, grpc_error* error) {
   GPR_TIMER_SCOPE("destroy_call", 0);
   size_t i;
@@ -1261,15 +1260,13 @@ static void post_batch_completion(batch_control* bctl) {
                        call->final_op.server.cancelled, nullptr, nullptr);
     }
 
-    if (call->channel != nullptr) {
     grpc_core::channelz::Channel* channelz_channel =
-          grpc_channel_get_channelz_channel_node(call->channel);
+        grpc_channel_get_channelz_node(call->channel);
     if (*call->final_op.client.status != GRPC_STATUS_OK) {
       channelz_channel->RecordCallFailed();
     } else {
       channelz_channel->RecordCallSucceeded();
     }
-    }
 
     GRPC_ERROR_UNREF(error);
     error = GRPC_ERROR_NONE;

src/core/lib/surface/channel.cc

@@ -190,7 +190,7 @@ char* grpc_channel_render_channelz(grpc_channel* channel) {
   return channel->channelz_channel->RenderJSON();
 }
 
-grpc_core::channelz::Channel* grpc_channel_get_channelz_channel_node(
+grpc_core::channelz::Channel* grpc_channel_get_channelz_node(
     grpc_channel* channel) {
   return channel->channelz_channel.get();
 }

src/core/lib/surface/channel.h

@@ -51,7 +51,7 @@ grpc_call* grpc_channel_create_pollset_set_call(
 /** Get a (borrowed) pointer to this channels underlying channel stack */
 grpc_channel_stack* grpc_channel_get_channel_stack(grpc_channel* channel);
 
-grpc_core::channelz::Channel* grpc_channel_get_channelz_channel_node(
+grpc_core::channelz::Channel* grpc_channel_get_channelz_node(
     grpc_channel* channel);
 
 /** Get a grpc_mdelem of grpc-status: X where X is the numeric value of

test/core/end2end/tests/simple_request.cc

@@ -259,7 +259,7 @@ static void test_invoke_simple_request(grpc_end2end_test_config config) {
   // ensures that core properly tracked the one call that occurred in this
   // simple end2end test.
   grpc_core::channelz::Channel* channelz_channel =
-      grpc_channel_get_channelz_channel_node(f.client);
+      grpc_channel_get_channelz_node(f.client);
   char* json = channelz_channel->RenderJSON();
   GPR_ASSERT(nullptr != strstr(json, "\"callsStarted\":\"1\""));
   GPR_ASSERT(nullptr != strstr(json, "\"callsFailed\":\"1\""));
@@ -282,7 +282,7 @@ static void test_invoke_10_simple_requests(grpc_end2end_test_config config) {
   // The following is a quick sanity check on channelz functionality. It
   // ensures that core properly tracked the ten calls that occurred.
   grpc_core::channelz::Channel* channelz_channel =
-      grpc_channel_get_channelz_channel_node(f.client);
+      grpc_channel_get_channelz_node(f.client);
   char* json = channelz_channel->RenderJSON();
   GPR_ASSERT(nullptr != strstr(json, "\"callsStarted\":\"10\""));
   GPR_ASSERT(nullptr != strstr(json, "\"callsFailed\":\"10\""));