errno相关信息

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https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/strerror-s-strerror-s-wcserror-s-wcserror-s?view=vs-2019

Your string message can be, at most, 94 characters long.

char buf[512] = { '\0' };
strerror_s(buf, 512, errno);
g_logger->error("CIoTBackendBase::start find device failed. errno={},{}", errno, &buf[0]);