[PATCH 4/5] core: Add default notify_change_stop() behaviour

["Juan A. Suarez Romero" <jasuarez igalia com>]

In case sources does not re-implement notify_change_stop(), just stop signal
emission.

Signed-off-by: Juan A. Suarez Romero <jasuarez igalia com>
---
 src/grl-media-source.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/grl-media-source.c b/src/grl-media-source.c
index 1db85d6..4402c8c 100644
--- a/src/grl-media-source.c
+++ b/src/grl-media-source.c
@@ -2572,6 +2572,11 @@ void grl_media_source_notify_change_stop (GrlMediaSource *source)
 
   if (source_class->notify_change_stop) {
     source_class->notify_change_stop (source);
+  } else {
+    /* Just stop signal emission */
+    g_signal_stop_emission (source,
+                            registry_signals[SIG_CONTENT_CHANGED],
+                            0);
   }
 }
 
-- 
1.7.3.5