Address reviewer comments

include/grpc/impl/codegen/grpc_types.h

@@ -669,7 +669,7 @@ typedef struct grpc_experimental_completion_queue_functor {
   /** The run member specifies a function that will be called when this
       tag is extracted from the completion queue. Its arguments will be a
       pointer to this functor and a boolean that indicates whether the
-      success status of this operation */
+      operation succeeded (non-zero) or failed (zero) */
   void (*functor_run)(struct grpc_experimental_completion_queue_functor*, int);
 } grpc_experimental_completion_queue_functor;
 

include/grpcpp/impl/codegen/callback_common.h

@@ -66,7 +66,7 @@ class CallbackWithStatusTag
 
   CallbackWithStatusTag(grpc_call* call, std::function<void(Status)> f,
                         CompletionQueueTag* ops)
-      : call_(call), func_(std::move(f)), ops_(ops), status_() {
+      : call_(call), func_(std::move(f)), ops_(ops) {
     g_core_codegen_interface->grpc_call_ref(call);
     functor_run = &CallbackWithStatusTag::StaticRun;
   }