Fix issue that was causing ShowWithoutActivating to indirectly call wxNonOwnedWindow::Show.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63027 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/toplevel_osx.cpp

@@ -159,7 +159,9 @@ wxString wxTopLevelWindowMac::GetTitle() const
 
 void wxTopLevelWindowMac::ShowWithoutActivating()
 {
-    if ( !wxTopLevelWindowBase::Show(true) )
+    // wxTopLevelWindowBase is derived from wxNonOwnedWindow, so don't
+    // call it here.
+    if ( !wxWindow::Show(true) )
         return;
 
     m_nowpeer->ShowWithoutActivating();