message: opcode exhaust error
diff: @@ -118,6 +118,7 @@ int coro_init(TSRMLS_D)
  {
  if (opcode == 255)
  {
  + swoole_php_fatal_error(E_ERROR, "all of opcode was defined, please check php.ini extensions.");
  return FAILURE;
  }
  else if (zend_get_user_opcode_handler(opcode) == NULL)
  @@ -146,6 +147,7 @@ int coro_init(TSRMLS_D)
  {
  if (opcode == 255)
  {
  + swoole_php_fatal_error(E_ERROR, "all of opcode was defined, please check php.ini extensions.");
  return FAILURE;
  }
  else if (zend_get_user_opcode_handler(opcode) == NULL)
  