test_timeval_to_iso8601_overflow: 'out' should be NULL

The to-iso8601 test in glib 2.58 fails on various 32-bit architectures.

Debian didn't package 2.57.3, but this is a new problem since 2.57.2.

https://buildd.debian.org/status/logs.php?pkg=glib2.0&arch=i386

Build logs

https://buildd.debian.org/status/package.php?p=glib2.0

Click Build Attempted

Build log excerpt

# Start of to-iso8601 tests
Bail out! GLib:ERROR:../../../../../glib/tests/timer.c:267:test_timeval_to_iso8601_overflow: 'out' should be NULL
ERROR: timer - Bail out! GLib:ERROR:../../../../../glib/tests/timer.c:267:test_timeval_to_iso8601_overflow:
 'out' should be NULL