fixed error about wxFrame::Command not returning a value

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2507 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/frame.h

@@ -73,7 +73,7 @@ public:
     virtual wxMenuBar *GetMenuBar() const;
 
     // Call this to simulate a menu command
-    bool Command(int id) { ProcessCommand(id); }
+    bool Command(int id) { return ProcessCommand(id); }
 
     // process menu command: returns TRUE if processed
     bool ProcessCommand(int id);