Small regression on Windows

From: Johannes Sixt <j6t@kdbg.org>
Date: Feb 13, 2017, 18:00 UTC
Message-ID: <6bc02b0a-a463-1f0c-3fee-ba27dd2482e4@kdbg.org>

Please type this, preferably outside of any repo to avoid that it is changed; note the command typo:

    git -c help.autocorrect=40 ceckout

Git waits for 4 seconds, but does not write anything until just before it exits. It bisects to

a9b8a09c3c30886c79133da9f48ef9f98c21c3b2 is the first bad commit
commit a9b8a09c3c30886c79133da9f48ef9f98c21c3b2
Author: Jeff Hostetler <jeffhost@microsoft.com>
Date:   Thu Dec 22 18:09:23 2016 +0100

     mingw: replace isatty() hack

     Git for Windows has carried a patch that depended on internals
     of MSVC runtime, but it does not work correctly with recent MSVC
     runtime. A replacement was written originally for compiling
     with VC++. The patch in this message is a backport of that
     replacement, and it also fixes the previous attempt to make
     isatty() tell that /dev/null is *not* an interactive terminal.

     Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
     Tested-by: Beat Bolli <dev+git@drbeat.li>
     Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
     Signed-off-by: Junio C Hamano <gitster@pobox.com>

:040000 040000 bc3c75bdfc766fe478e160a9452c31bfef50b505 f7183c3a0726fef7161d5f9ff8c997260025f1bb M compat

Any ideas? I haven't had time to dig any further.

-- Hannes