Select Entity Color... (GTK error fix) - Grid menu missing shortcut n…

…ames (fix)

- 5baf036 Possible fix for Misc menu, Select Entity Color...
          not working at times
  Had overlooked another reference to the "wrong"
     "menu_misc_selectentitycolor"
  entry, this caused a
     Gtk-CRITICAL **: gtk_widget_set_sensitive: assertion
       `GTK_IS_WIDGET (widget)' failed
  -> fix: "menu_misc_select_entitycolor"
(cherry picked from commit 315b218)

radiant/groupdialog.cpp

@@ -1191,7 +1191,7 @@ static void switch_page (GtkNotebook *notebook, GtkNotebookPage *page, guint pag
   gtk_label_get(GTK_LABEL(gtk_notebook_get_tab_label(notebook, gtk_notebook_get_nth_page(notebook, page_num))), &text);
   gtk_window_set_title (GTK_WINDOW (data), text);
 
-  gpointer item = g_object_get_data (G_OBJECT (g_pParentWnd->m_pWidget), "menu_misc_selectentitycolor");
+  gpointer item = g_object_get_data (G_OBJECT (g_pParentWnd->m_pWidget), "menu_misc_select_entitycolor");
 
   if (g_pParentWnd->FloatingGroupDialog())
   {