Add the lines in get_property() for the preview-x/y/w/h properties so the values can be retrieved without causing critical warnings. Fixes https://github.com/thaytan/gst-rpicamsrc/issues/42
Add the lines in get_property() for the preview-x/y/w/h properties so the values can be retrieved without causing critical warnings. Fixes https://github.com/thaytan/gst-rpicamsrc/issues/42