fix non-void function not returning value warning

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29434 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/combobox.cpp

@@ -588,7 +588,7 @@ wxInt32 wxComboBox::MacControlHit(WXEVENTHANDLERREF WXUNUSED(handler) , WXEVENTR
     event.SetInt(GetSelection());
     event.SetEventObject(this);
     event.SetString(GetStringSelection());
-    ProcessCommand(event);
+    ProcessCommand(event);*/
-    return noErr ; */
+    return noErr ;
 }