Prefer getSelectedFiles to getFiles (vcl)

Change-Id: I0cb515a8b394c5e4b43fe84282383872c0680f15
Reviewed-on: https://gerrit.libreoffice.org/19216Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

vcl/source/gdi/print3.cxx

@@ -251,7 +251,7 @@ static OUString queryFile( Printer* pPrinter )
 
     if( xFilePicker->execute() == ui::dialogs::ExecutableDialogResults::OK )
     {
-        uno::Sequence< OUString > aPathSeq( xFilePicker->getFiles() );
+        uno::Sequence< OUString > aPathSeq( xFilePicker->getSelectedFiles() );
         INetURLObject aObj( aPathSeq[0] );
         aResult = aObj.PathToFileName();
     }

vcl/win/source/gdi/salprn.cxx

@@ -1531,7 +1531,7 @@ bool WinSalPrinter::StartJob( const OUString* pFileName,
 
         if( xFilePicker->execute() == ExecutableDialogResults::OK )
         {
-            Sequence< OUString > aPathSeq( xFilePicker->getFiles() );
+            Sequence< OUString > aPathSeq( xFilePicker->getSelectedFiles() );
             INetURLObject aObj( aPathSeq[0] );
             // we're using ansi calls (StartDocA) so convert the string
             aOutFileName = aObj.PathToFileName();