Attempt to fix un-resolved sub-menus.

While I'm pretty sure this will work, the issues don't appear on OSX
so I can't be positive.

Fixes: lp:1832049
* https://bugs.launchpad.net/kicad/+bug/1832049

common/tool/conditional_menu.cpp

@@ -103,6 +103,13 @@ SELECTION g_resolveDummySelection;
 void CONDITIONAL_MENU::Resolve()
 {
     Evaluate( g_resolveDummySelection );
+
+    runOnSubmenus( [] ( ACTION_MENU* aMenu ) {
+        CONDITIONAL_MENU* conditionalMenu = dynamic_cast<CONDITIONAL_MENU*>( aMenu );
+
+        if( conditionalMenu )
+            conditionalMenu->Resolve();
+    } );
 }