removed extra semicolons to fix compilation with gcc -Wpedantic (patch 1701236)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@45498 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/window.h

@@ -193,7 +193,7 @@ public:
     wxWindow *FindItemByHWND(WXHWND hWnd, bool controlOnly = false) const;
 
     // MSW only: true if this control is part of the main control
-    virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return false; };
+    virtual bool ContainsHWND(WXHWND WXUNUSED(hWnd)) const { return false; }
 
 #if wxUSE_TOOLTIPS
     // MSW only: true if this window or any of its children have a tooltip