return int from wxGetWindowId(), not WORD, to ensure comparing it with wxWindowID elsewhere works correctly even for negative ids

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50181 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/private.h

@@ -866,7 +866,7 @@ extern WXDLLEXPORT wxString wxGetWindowClass(WXHWND hWnd);
 
 // get the window id (should be unsigned, hence this is not wxWindowID which
 // is, for mainly historical reasons, signed)
-extern WXDLLEXPORT WXWORD wxGetWindowId(WXHWND hWnd);
+extern WXDLLEXPORT int wxGetWindowId(WXHWND hWnd);
 
 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 // different