Enable ok button even always if hideOutput is selected

Author: mhugent

src/gui/qgsrasterlayersaveasdialog.cpp

@@ -159,4 +159,9 @@ void QgsRasterLayerSaveAsDialog::hideOutput()
   mSaveAsLabel->hide();
   mSaveAsLineEdit->hide();
   mBrowseButton->hide();
+  QPushButton* okButton = mButtonBox->button( QDialogButtonBox::Ok );
+  if ( okButton )
+  {
+    okButton->setEnabled( true );
+  }
 }