only try to parse endpoints if there is something to parse

otherwise, lets try to avoid parsing "" as "0.0.0.0:0", as that doesnt make sense.

Author: guss77

daemon/redis.c

@@ -923,8 +923,10 @@ static int redis_hash_get_endpoint(struct endpoint *out, const struct redis_hash
 
 	if (redis_hash_get_str(&s, h, k))
 		return -1;
-	if (endpoint_parse_any(out, s.s))
-		return -1;
+	if (s.len) {
+		if (endpoint_parse_any(out, s.s))
+			return -1;
+	}
 
 	return 0;
 }