[BUG] t5300 fails tests on NonStop x86 at 2.32.0-rc2

From: Randall S. Becker <rsbecker@nexbridge.com>
Date: May 31, 2021, 18:35 UTC
Message-ID: <008701d7564b$c7657510$56305f30$@nexbridge.com>

This one started at 2.32.0-rc1, AFIAK:

expecting success of 5300.2 'pack without delta':
        packname_1=$(git pack-objects --progress --window=0 test-1 \
                        <obj-list 2>stderr) &&
        check_deltas stderr = 0

+ + git pack-objects --progress --window=0 test-1
+ 0< obj-list 2> stderr
packname_1=
error: last command exited with $?=128
not ok 2 - pack without delta
#
#               packname_1=$(git pack-objects --progress --window=0 test-1 \
#                               <obj-list 2>stderr) &&
#               check_deltas stderr = 0
#

Stderr contains:

Enumerating objects: 8, done. Counting objects: 100% (8/8), done. fatal: fsync error on '.git/objects/pack/tmp_pack_Y6t3Br': Interrupted system call

-- Brief whoami: NonStop developer since approximately 211288444200000000 UNIX developer since approximately 421664400 -- In my real life, I talk too much.