[farsight2/master] Check for NULL parameters too

[Olivier Crête]

---
 gst-libs/gst/farsight/fs-base-conference.c  |    4 ++++
 gst-libs/gst/farsight/fs-conference-iface.c |    2 ++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/gst-libs/gst/farsight/fs-base-conference.c b/gst-libs/gst/farsight/fs-base-conference.c
index 5cdc037..04dedf2 100644
--- a/gst-libs/gst/farsight/fs-base-conference.c
+++ b/gst-libs/gst/farsight/fs-base-conference.c
@@ -151,6 +151,8 @@ fs_base_conference_new_session (FsConference *conf,
 
   FsSession *new_session = NULL;
 
+  g_return_val_if_fail (base_conf, NULL);
+  g_return_val_if_fail (klass, NULL);
   g_return_val_if_fail (klass->new_session, NULL);
 
   new_session = klass->new_session (base_conf, media_type, error);
@@ -213,6 +215,8 @@ fs_base_conference_new_participant (FsConference *conf,
   FsBaseConference *baseconf = FS_BASE_CONFERENCE (conf);
   FsBaseConferenceClass *klass = FS_BASE_CONFERENCE_GET_CLASS (conf);
 
+  g_return_val_if_fail (baseconf, NULL);
+  g_return_val_if_fail (klass, NULL);
   g_return_val_if_fail (klass->new_participant, NULL);
 
   return klass->new_participant (baseconf, cname, error);
diff --git a/gst-libs/gst/farsight/fs-conference-iface.c b/gst-libs/gst/farsight/fs-conference-iface.c
index 66d35a5..1417aea 100644
--- a/gst-libs/gst/farsight/fs-conference-iface.c
+++ b/gst-libs/gst/farsight/fs-conference-iface.c
@@ -121,6 +121,7 @@ fs_conference_new_session (FsConference *conference, FsMediaType media_type,
   FsConferenceClass *iface =
       FS_CONFERENCE_GET_IFACE (conference);
 
+  g_return_val_if_fail (iface, NULL);
   g_return_val_if_fail (iface->new_session, NULL);
 
   return iface->new_session (conference, media_type, error);
@@ -145,6 +146,7 @@ fs_conference_new_participant (FsConference *conference, gchar *cname,
   FsConferenceClass *iface =
       FS_CONFERENCE_GET_IFACE (conference);
 
+  g_return_val_if_fail (iface, NULL);
   g_return_val_if_fail (iface->new_participant, NULL);
 
   return iface->new_participant (conference, cname, error);
-- 
1.5.6.5