message: Put current location in graph marker popup menu items
diff: @@ -2249,14 +2249,16 @@ int TraceWin::graph_marker_menuitem( const char *label, bool check_valid, action
  if ( !check_valid || graph_marker_valid( i ) )
  {
  std::string shortcut;
  - char mlabel[ 2 ] = { char( 'A' + i ), 0 };
  + std::string mlabel = s_textclrs().bright_str( std::string( 1, ( 'A' + i ) ) );
  ImGui::PushID( label );
  if ( action != action_nil )
  shortcut = s_actions().hotkey_str( ( action_t )( action + i ) );
  + if ( graph_marker_valid( i ) )
  + mlabel += " (" + ts_to_timestr( m_graph.ts_markers[ i ], 2 ) + ")";
  - if ( ImGui::MenuItem( mlabel, shortcut.c_str() ) )
  + if ( ImGui::MenuItem( mlabel.c_str(), shortcut.c_str() ) )
  ret = i;
  ImGui::PopID();
  