restore errno when release success in pooled socket #499
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Signed-off-by: liulanzheng <lanzheng.liulz@alibaba-inc.com>
lihuiba
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Signed-off-by: liulanzheng <lanzheng.liulz@alibaba-inc.com>
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In release() of TCPSocketPool, the call to stream_alive() modifies errno even if it succeeds. So restore and reset errno if stream_alive() success.