Make the handling of response statuses, empty response bodies, etc. consistent with [changes][1] recently made to dd-opentracing-cpp. [1]: https://github.com/DataDog/dd-opentracing-cpp/pull/260
Make the handling of response statuses, empty response bodies, etc. consistent with changes recently made to dd-opentracing-cpp.