--- asterisk-1.8-1.8.8.0-rc4/channels/chan_sip.c	2011-12-08 15:43:46.000000000 +0100
+++ asterisk_new/channels/chan_sip.c	2011-12-08 15:24:17.000000000 +0100
@@ -25490,6 +25490,7 @@
 			ast_channel_unlock(p->owner);
 			sip_pvt_unlock(p);
 		}
+		res = 1;
 	}
 
 return_unref: