Index: channels/chan_iax2.c
===================================================================
--- channels/chan_iax2.c        (revision 207078)
+++ channels/chan_iax2.c        (working copy)
@@ -8536,7 +8536,6 @@
                        iaxs[callno]->owner->hangupcause = causecode;
                }
                ast_set_hangupsource(iaxs[callno]->owner, iaxs[callno]->owner->name, 0);
-               ast_channel_unlock(owner);
        }
        if (locked) {
                ast_channel_unlock(owner);