fixing unused param warning

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60007 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/carbon/nonownedwnd.cpp

@@ -1181,7 +1181,7 @@ void wxNonOwnedWindowCarbonImpl::Create(
     const wxPoint& pos,
     const wxSize& size,
     long style, long extraStyle, 
-    const wxString& name )
+    const wxString& WXUNUSED(name) )
 {
 
     OSStatus err = noErr ;