add missing lock for failed call restores

Change-Id: Ibeff1501483038c528f9ba92fe461ec866e73bff

daemon/redis.c

@@ -1396,21 +1396,18 @@ static void json_restore_call(struct redis *r, struct callmaster *m, const str *
 	JsonParser *parser =0;
 
 	rr_jsonStr = redis_get(r, REDIS_REPLY_STRING, "GET " PB, STR(callid));
-	if (!rr_jsonStr) {
-		rlog(LOG_ERR, "Could not retrieve json data from redis for key: "STR_FORMAT, STR_FMT(callid));
+	err = "could not retrieve JSON data from redis";
+	if (!rr_jsonStr)
 		goto err1;
-	}
 
 	parser = json_parser_new();
-	if (!json_parser_load_from_data (parser, rr_jsonStr->str, -1, NULL)) {
-		rlog(LOG_DEBUG, "Could not parse json data !");
+	err = "could not parse JSON data";
+	if (!json_parser_load_from_data (parser, rr_jsonStr->str, -1, NULL))
 		goto err1;
-	}
 	root_reader = json_reader_new (json_parser_get_root (parser));
-	if (!root_reader) {
-		rlog(LOG_DEBUG, "Could not read json data !");
+	err = "could not read JSON data";
+	if (!root_reader)
 		goto err1;
-	}
 
 	c = call_get_or_create(callid, m, type);
 	err = "failed to create call struct";
@@ -1532,8 +1529,11 @@ err1:
 				err);
 		if (c) 
 			call_destroy(c);
-		else
+		else {
+			mutex_lock(&m->conf.redis_write->lock);
 			redisCommandNR(m->conf.redis_write->ctx, "DEL " PB, STR(callid));
+			mutex_unlock(&m->conf.redis_write->lock);
+		}
 	}
 	if (c)
 		obj_put(c);