use wxStockCursor (as documented and as already implemented in wxMotif) instead of a plain 'int'

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55837 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/cursor.h

@@ -46,7 +46,7 @@ public:
              ,int             nHotSpotX = 0
              ,int             nHotSpotY = 0
             );
-    wxCursor(int nCursorType);
+    wxCursor(wxStockCursor nCursorType);
     inline ~wxCursor() { }
 
     inline WXHCURSOR GetHCURSOR(void) const { return (M_CURSORDATA ? M_CURSORDATA->m_hCursor : 0); }