Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 378070)
+++ channels/chan_sip.c	(working copy)
@@ -23335,6 +23335,16 @@
 				sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
 			}
 			res = -1;
+			if (c) {
+				p->invitestate = INV_COMPLETED;
+				p->owner = NULL;
+				ast_channel_unlock(c);
+				*nounlock = 1;
+				sip_pvt_unlock(p);
+				ast_channel_release(c);
+				sip_pvt_lock(p);
+				c = NULL;
+			}
 			goto request_invite_cleanup;
 		}
 
@@ -23349,6 +23359,16 @@
 					sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
 				}
 				res = -1;
+				if (c) {
+					p->invitestate = INV_COMPLETED;
+					p->owner = NULL;
+					ast_channel_unlock(c);
+					*nounlock = 1;
+					sip_pvt_unlock(p);
+					ast_channel_release(c);
+					sip_pvt_lock(p);
+					c = NULL;
+				}
 				goto request_invite_cleanup;
 			}
 		}
@@ -23364,6 +23384,16 @@
 					sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
 				}
 				res = -1;
+				if (c) {
+					p->invitestate = INV_COMPLETED;
+					p->owner = NULL;
+					ast_channel_unlock(c);
+					*nounlock = 1;
+					sip_pvt_unlock(p);
+					ast_channel_release(c);
+					sip_pvt_lock(p);
+					c = NULL;
+				}
 				goto request_invite_cleanup;
 			}
 
@@ -23395,6 +23425,16 @@
 					sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
 				}
 				res = -1;
+				if (c) {
+					p->invitestate = INV_COMPLETED;
+					p->owner = NULL;
+					ast_channel_unlock(c);
+					*nounlock = 1;
+					sip_pvt_unlock(p);
+					ast_channel_release(c);
+					sip_pvt_lock(p);
+					c = NULL;
+				}
 				goto request_invite_cleanup;
 			}
 			break;