message: add seria eof
diff: @@ -1360,6 +1360,7 @@ again:
  {
  seria_array_type(Z_ARRVAL_P(zvalue), buffer, _STR_HEADER_SIZE, _STR_HEADER_SIZE + 1);
  swoole_serialize_arr(buffer, Z_ARRVAL_P(zvalue));
  + swoole_string_cpy(buffer, "EOF", 3);
  swoole_mini_filter_clear();
  break;
  }
  @@ -1372,6 +1373,7 @@ again:
  SBucketType* type = (SBucketType*) (buffer->buffer + _STR_HEADER_SIZE);
  type->data_type = IS_UNDEF;
  swoole_serialize_object(buffer, zvalue, _STR_HEADER_SIZE);
  + swoole_string_cpy(buffer, "EOF", 3);
  swoole_mini_filter_clear();
  break;
  }
  