huaweicloud-iot-device-sdk-c-0.9.0/src/util/string_util.c:106:3: error: Common realloc mistake: 'result' nulled but not freed upon failure [memleakOnRealloc]
  result = realloc(result, length);
  ^
huaweicloud-iot-device-sdk-c-0.9.0/src/util/string_util.c:108:15: error: va_list 'args' was opened but not closed by va_end(). [va_end_missing]
   return NULL;
              ^