Breaks on "Perl in space" with the default of no short path names

[mohawk2]

On my "Perl in space" setup, this test failure happens:

# Failed test 'file has no spaces'
# at t/shell_config_generate__space_win32.t line 34.
# Comparison matched (it should not).
# before: C:\Users\user\AppData\Local\Temp\ofOm8vrJuY\dir with space\foo.txt
# after:  C:\Users\user\AppData\Local\Temp\ofOm8vrJuY\dir with space\foo.txt
t/shell_config_generate__space_win32.t ... Dubious, test returned 2 (wstat 512, 0x200)

It appears to be because of this, in lib/Shell/Config/Generate.pm:

sub win32_space_be_gone
{
  return @_ if $^O !~ /^(MSWin32|cygwin|msys)$/;
  map { /\s/ ? _win_to_posix_path(Win32::GetShortPathName(_posix_to_win_path($_))) : $_ } @_;
}

These days, short path names are not enabled by default anymore, so the test that relies on it being so will fail on some systems.