Do not unref tp_chat directly in the message_received callback to avoid a crash.
Do not unref tp_chat directly in the message_received callback to avoid a crash.

svn path=/trunk/; revision=1097

GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets