Fix leak in gst_flow_get_name() wrapper function. Fixes #574251
Fix leak in gst_flow_get_name() wrapper function. Fixes #574251

PyString_FromString will make a copy of the provided string.

freedesktop-unofficial-mirror/gstreamer__gst-python,lubosz/gst-python,freedesktop-unofficial-mirror/gstreamer-sdk__gst-python,GStreamer/gst-python,freedesktop-unofficial-mirror/gstreamer__gst-python,freedesktop-unofficial-mirror/gstreamer-sdk__gst-python,GStreamer/gst-python,alessandrod/gst-python,pexip/gst-python,freedesktop-unofficial-mirror/gstreamer-sdk__gst-python,lubosz/gst-python,freedesktop-unofficial-mirror/gstreamer-sdk__gst-python,pexip/gst-python,alessandrod/gst-python,freedesktop-unofficial-mirror/gstreamer__gst-python,GStreamer/gst-python,lubosz/gst-python,alessandrod/gst-python,pexip/gst-python