res_pjsip_outbound_registration.c: Move unref to a better place.

Move an unconditional unref of client_state so it doesn't look like it
could be used after the last ref has destroyed it.
........

Merged revisions 430902 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@430903 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_pjsip_outbound_registration.c

@@ -462,8 +462,6 @@ static int handle_client_registration(void *data)
 	pjsip_regc_info info;
 	char server_uri[PJSIP_MAX_URL_SIZE], client_uri[PJSIP_MAX_URL_SIZE];
 
-	ao2_ref(client_state, -1);
-
 	if ((client_state->status == SIP_REGISTRATION_STOPPED) ||
 		(pjsip_regc_register(client_state->client, PJ_FALSE, &tdata) != PJ_SUCCESS)) {
 		return 0;
@@ -512,6 +510,7 @@ static void sip_outbound_registration_timer_cb(pj_timer_heap_t *timer_heap, stru
 		ast_log(LOG_WARNING, "Failed to pass outbound registration to threadpool\n");
 		ao2_ref(client_state, -1);
 	}
+	ao2_ref(client_state, -1);
 
 	entry->id = 0;
 }