GStreamer.Core.Parse: initialize GError with NULL
GStreamer.Core.Parse: initialize GError with NULL

When passing a GError to a parse* function, it is important to set its
contents to NULL. GStreamer has assertions of the form

    g_return_val_if_fail (error == NULL || *error == NULL, NULL);
    
Violating them may lead to a segfault when assertions are enabled.


gtk2hs/gstreamer