message: Optimize empty string comparision
diff: @@ -91,7 +91,7 @@ namespace fc {
  }
  const string& get_thread_name() {
  static int thread_count = 0;
  - if( thread_name == string() )
  + if( thread_name.empty() )
  thread_name = string("thread-")+fc::to_string(thread_count++);
  return thread_name;
  }
  