Add some safety around event-driven menubar recreation

Maybe addresses sentry KICAD-PC

common/eda_base_frame.cpp

@@ -483,9 +483,10 @@ void EDA_BASE_FRAME::ReCreateMenuBar()
      * ensure that they do not occur within the same event handling call stack.
      */
 
-    CallAfter( [=]()
+    CallAfter( [&]()
                {
-                   doReCreateMenuBar();
+                   if( !m_isClosing )
+                       doReCreateMenuBar();
                } );
 }