Add test++ linx++

src/mqtt.c

@@ -43,7 +43,8 @@ struct mqtt_message {
 
 static void mqtt_send_header(struct mg_connection *c, uint8_t cmd,
                              uint8_t flags, uint32_t len) {
-  uint8_t buf[1 + sizeof(len)] = {(cmd << 4) | flags}, *vlen = &buf[1];
+  uint8_t buf[1 + sizeof(len)], *vlen = &buf[1];
+  buf[0] = (cmd << 4) | flags;
   do {
     *vlen = len % 0x80;
     len /= 0x80;