Mac: Don't show icons in editor tool bar context menu.

Task-number: QTCREATORBUG-8870

Change-Id: I41022e9b0156f4ec6a6802501ec1d5b9eadb87b7
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/coreplugin/editormanager/editormanager.cpp

@@ -737,6 +737,7 @@ static void assignAction(QAction *self, QAction *other)
     self->setIcon(other->icon());
     self->setShortcut(other->shortcut());
     self->setEnabled(other->isEnabled());
+    self->setIconVisibleInMenu(other->isIconVisibleInMenu());
 }
 
 void EditorManager::addSaveAndCloseEditorActions(QMenu *contextMenu, const QModelIndex &editorIndex)