gst: fix stream params memory leak
Both the GPtrArray and its contents are leaked in case of success.
pw_stream_connect()
copies the params as needed, so use g_autoptr()
to free the array and with it, its contents.
Both the GPtrArray and its contents are leaked in case of success.
pw_stream_connect()
copies the params as needed, so use g_autoptr()
to free the array and with it, its contents.