Return wxPrintAbortDialog from CreateAbortWindow().

Instead of returning a generic wxWindow*, return the type actually used.
It was part of the public header already, but not used in any publicly
visible way.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72306 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/prntbase.cpp

@@ -321,7 +321,7 @@ wxPrinterBase::~wxPrinterBase()
 {
 }
 
-wxWindow *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout * printout)
+wxPrintAbortDialog *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout * printout)
 {
     return new wxPrintAbortDialog(parent, printout->GetTitle());
 }
@@ -352,7 +352,7 @@ wxPrinter::~wxPrinter()
     delete m_pimpl;
 }
 
-wxWindow *wxPrinter::CreateAbortWindow(wxWindow *parent, wxPrintout *printout)
+wxPrintAbortDialog *wxPrinter::CreateAbortWindow(wxWindow *parent, wxPrintout *printout)
 {
     return m_pimpl->CreateAbortWindow( parent, printout );
 }