return NULL;
/* ignore filter id */
- (void)g_mime_stream_filter_add ((GMimeStreamFilter *)gzstream, gzfilter);
+ (void) g_mime_stream_filter_add ((GMimeStreamFilter *) gzstream, gzfilter);
+ g_object_unref (gzfilter);
+ g_object_unref (file_stream);
return gzstream;
} else {
return file_stream;