Add missing unlock at MWI message sending time

(closes issue ASTERISK-18573)

Patches:
   sip_mwi_lock.patch (license #5041) by Gregory Hinton Nietsky

Thanks to irrot for the reminder, to Gregory for the patch!


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@336378 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

@@ -278,7 +278,7 @@ MOD_SUBDIRS_MENUSELECT_TREE:=$(MOD_SUBDIRS:%=%-menuselect-tree)
 ifneq ($(findstring darwin,$(OSARCH)),)
   _ASTCFLAGS+=-D__Darwin__
   SOLINK=-bundle -Xlinker -macosx_version_min -Xlinker 10.4 -Xlinker -undefined -Xlinker dynamic_lookup -force_flat_namespace
-  ifeq ($(shell /usr/bin/sw_vers -productVersion | cut -c1-4),10.6)
+  ifeq ($(shell /usr/bin/sw_vers -productVersion | cut -c1-4),10.7)
     SOLINK+=/usr/lib/bundle1.o
   endif
   _ASTLDFLAGS+=-L/usr/local/lib

channels/chan_sip.c

@@ -25030,6 +25030,7 @@ static int sip_send_mwi_to_peer(struct sip_peer *peer, int cache_only)
 			dialog_unlink_all(p, TRUE, TRUE);
 			dialog_unref(p, "unref dialog p just created via sip_alloc");
 			/* sip_destroy(p); */
+			ao2_unlock(peer);
 			return 0;
 		}
 		/* Recalculate our side, and recalculate Call ID */