Ticket #20952: patch-propgrid_wrap.diff

src/osx_cocoa/propgrid_wrap.cpp

@@ -3541 +3541 @@
     }
     else if ( input == Py_None )
     {
-        *v = new wxPGPropArgCls(NULL);
+        *v = new wxPGPropArgCls((const wxPGProperty*) NULL);
     }
     else
     {