[telepathy-glib/master] tp_text_mixin_class_init: critical if the mixin class wasn't set up properly

[Simon McVittie]

This avoids a coverity warning about the unused assignment, and matches
the intention.
---
 telepathy-glib/text-mixin.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/telepathy-glib/text-mixin.c b/telepathy-glib/text-mixin.c
index 5660c41..22b53cb 100644
--- a/telepathy-glib/text-mixin.c
+++ b/telepathy-glib/text-mixin.c
@@ -155,6 +155,7 @@ tp_text_mixin_class_init (GObjectClass *obj_cls, glong offset)
       GINT_TO_POINTER (offset));
 
   mixin_cls = TP_TEXT_MIXIN_CLASS (obj_cls);
+  g_return_if_fail (mixin_cls != NULL);
 }
 
 
-- 
1.5.6.5