Merge branch 'rj/cygwin-exit'

Treat ECONNABORTED the same as ECONNRESET in 'git credential-cache' to
work around a possible Cygwin regression. This resolves a race condition
caused by changes in Cygwin's handling of socket closures, allowing the
client to exit cleanly when encountering ECONNABORTED.

* rj/cygwin-exit:
  credential-cache: treat ECONNABORTED like ECONNRESET

diff --cc builtin/credential-cache.c
Simple merge