Minor fixes

src/core/ext/filters/client_channel/client_channel_channelz.cc

@@ -47,8 +47,7 @@ void SubchannelNode::SetChildSocketUuid(intptr_t uuid) {
 }
 
 void SubchannelNode::PopulateConnectivityState(grpc_json* json) {
-  grpc_connectivity_state state;
-  state = connectivity_state_.Load(MemoryOrder::RELAXED);
+  grpc_connectivity_state state = connectivity_state_.Load(MemoryOrder::RELAXED);
   json = grpc_json_create_child(nullptr, json, "state", nullptr,
                                 GRPC_JSON_OBJECT, false);
   grpc_json_create_child(nullptr, json, "state",

src/core/ext/filters/client_channel/client_channel_channelz.h

@@ -37,7 +37,7 @@ class SubchannelNode : public BaseNode {
   SubchannelNode(const char* target_address, size_t channel_tracer_max_nodes);
   ~SubchannelNode() override;
 
-  // Used when the subchannel's connectivity state changes.
+  // Sets the subchannel's connectivity state without health checking.
   void UpdateConnectivityState(grpc_connectivity_state state);
 
   // Used when the subchannel's child socket uuid changes. This should be set