Fix #9704, GdalTools file dialogs return QPyNullVariant due to QSettings undefined return type
Merge pull request #1230 from dakcarto/issue_9704_gdal-qsettings

Fix #9704, GdalTools file dialogs return QPyNullVariant due to QSettings undefined return type
[TRANSUP] nb by James

Signed-off-by: Werner Macho <werner.macho@gmail.com>