audioresample: Make src query MT-safe

It is possible that the element might be going down while the event arrives

diff --git a/gst/audioresample/gstaudioresample.c b/gst/audioresample/gstaudioresample.c
index 92e38dd07f11e707933471c9f3148516ea6c26cb..8f9ea3be81897b91031ecefed0de9ae00f3ca602 100644 (file)
--- a/gst/audioresample/gstaudioresample.c
+++ b/gst/audioresample/gstaudioresample.c
@@ -1264,8 +1264,12 @@ static gboolean
 gst_audio_resample_query (GstPad * pad, GstQuery * query)
 {
   GstAudioResample *resample = GST_AUDIO_RESAMPLE (gst_pad_get_parent (pad));
-  GstBaseTransform *trans = GST_BASE_TRANSFORM (resample);
+  GstBaseTransform *trans;
   gboolean res = TRUE;
+  if (G_UNLIKELY (resample == NULL))
+    return FALSE;
+
+  trans = GST_BASE_TRANSFORM (resample);
 
   switch (GST_QUERY_TYPE (query)) {
     case GST_QUERY_LATENCY: