Fix a spurious segfault on Windows.

This can be seen, e.g., when running regression_tests.pd gui-less in
Windows, as our CI script does. The easy fix is to just bypass the gui
finalization code in glob_quit() when running gui-less (sys_nogui).
6 jobs for windows-segfault-fix in 229 minutes and 4 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
passed debian_stretch_x86_64_deb #20817
debian stretch x86_64

00:36:58

passed osx_10.11_x86_64_dmg #20819
osx v10.11 dmg

00:34:10

passed osx_10.8_x86_64_dmg #20820
v10.8 dmg osx

00:19:15

failed raspbian_stretch_armv7l_deb #20822
raspbian arm stretch

passed ubuntu_16.04_x86_64_deb #20818
ubuntu v16.04 x86_64

00:38:38

passed windows_i386_innosetup #20821
windows i386

01:40:00

 
Name Stage Failure
failed
raspbian_stretch_armv7l_deb Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
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