renamed IsRefTo() to IsSameAs() (do complain if this is not more clear) and

changed its signature to take a const reference instead of a pointer which
simplifies the code and makes it safer as well


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42776 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/window.cpp

@@ -1661,7 +1661,7 @@ void wxWindowMac::DoGetClientSize( int *x, int *y ) const
 
 bool wxWindowMac::SetCursor(const wxCursor& cursor)
 {
-    if (m_cursor.IsRefTo(&cursor))
+    if (m_cursor.IsSameAs(cursor))
         return false;
 
     if (!cursor.IsOk())