Release the allocated channel decreasing the reference counter.

When allocating the channel use ao2_ref(-1) to release it, instead of calling
ast_free().
Also avoid freeing structures inside that channel (on error) if they will be
released by the channel destructor being called if the reference counter reachs
0.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@200108 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/channel.c

@@ -812,27 +812,20 @@ __ast_channel_alloc_ap(int needqueue, int state, const char *cid_num, const char
 
 	if (!(tmp->sched = sched_context_create())) {
 		ast_log(LOG_WARNING, "Channel allocation failed: Unable to create schedule context\n");
-		ast_free(tmp);
-		return NULL;
+		return ast_channel_unref(tmp);
 	}
 	
 	if ((ast_string_field_init(tmp, 128))) {
-		sched_context_destroy(tmp->sched);
-		ast_free(tmp);
-		return NULL;
+		return ast_channel_unref(tmp);
 	}
 
 	if (cid_name) {
 		if (!(tmp->cid.cid_name = ast_strdup(cid_name))) {
-			ast_string_field_free_memory(tmp);
-			sched_context_destroy(tmp->sched);
 			return ast_channel_unref(tmp);
 		}
 	}
 	if (cid_num) {
 		if (!(tmp->cid.cid_num = ast_strdup(cid_num))) {
-			ast_string_field_free_memory(tmp);
-			sched_context_destroy(tmp->sched);
 			return ast_channel_unref(tmp);
 		}
 	}