Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 380055)
+++ channels/chan_sip.c	(working copy)
@@ -24618,9 +24618,6 @@
 	ast_setstate(c, AST_STATE_DOWN);
 	ast_channel_unlock(c);
 
-	/* The call should be down with no ast_channel, so hang it up */
-	ast_channel_tech_pvt_set(c, dialog_unref(ast_channel_tech_pvt(c), "unref dialog c->tech_pvt"));
-
 	/* c and c's tech pvt must be unlocked at this point for ast_hangup */
 	ast_hangup(c);
 	/* this indicates to handle_request_do that the owner channel has already been unlocked */