audiovisualizer: don't use private GMutex implementation details

Don't use private GMutex implementation details to check
whether it has been freed already or not. Just turn dispose
function into finalize function which will only be called
once, that way we can just clear the mutex unconditionally.

diff --git a/ext/libvisual/gstaudiovisualizer.c b/ext/libvisual/gstaudiovisualizer.c
index 4bc51b3..598d2fc 100644 (file)
--- a/ext/libvisual/gstaudiovisualizer.c
+++ b/ext/libvisual/gstaudiovisualizer.c
@@ -63,7 +63,7 @@ static void gst_audio_visualizer_set_property (GObject * object,
     guint prop_id, const GValue * value, GParamSpec * pspec);
 static void gst_audio_visualizer_get_property (GObject * object,
     guint prop_id, GValue * value, GParamSpec * pspec);
-static void gst_audio_visualizer_dispose (GObject * object);
+static void gst_audio_visualizer_finalize (GObject * object);
 
 static gboolean gst_audio_visualizer_src_negotiate (GstAudioVisualizer * scope);
 static gboolean gst_audio_visualizer_src_setcaps (GstAudioVisualizer *
@@ -549,7 +549,7 @@ gst_audio_visualizer_class_init (GstAudioVisualizerClass * klass)
 
   gobject_class->set_property = gst_audio_visualizer_set_property;
   gobject_class->get_property = gst_audio_visualizer_get_property;
-  gobject_class->dispose = gst_audio_visualizer_dispose;
+  gobject_class->finalize = gst_audio_visualizer_finalize;
 
   element_class->change_state =
       GST_DEBUG_FUNCPTR (gst_audio_visualizer_change_state);
@@ -656,7 +656,7 @@ gst_audio_visualizer_get_property (GObject * object, guint prop_id,
 }
 
 static void
-gst_audio_visualizer_dispose (GObject * object)
+gst_audio_visualizer_finalize (GObject * object)
 {
   GstAudioVisualizer *scope = GST_AUDIO_VISUALIZER (object);
 
@@ -673,11 +673,10 @@ gst_audio_visualizer_dispose (GObject * object)
     gst_buffer_unref (scope->tempbuf);
     scope->tempbuf = NULL;
   }
-  if (scope->config_lock.p) {
-    g_mutex_clear (&scope->config_lock);
-    scope->config_lock.p = NULL;
-  }
-  G_OBJECT_CLASS (parent_class)->dispose (object);
+
+  g_mutex_clear (&scope->config_lock);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
 }
 
 static void