install-grub.pl: Do stat() last to not hang on hanging network FS

        chomp $fs;

        my @fields = split / /, $fs;

        my $mountPoint = $fields[4];

        next unless -d $mountPoint;

        my @mountOptions = split /,/, $fields[5];

        # Skip the optional fields.

        # Is it better than our current match?

        if (length($mountPoint) > length($bestFs->mount)) {

            # -d performs a stat, which can hang forever on network file systems,

            # so we only make this call last, when it's likely that this is the mount point we need.

            next unless -d $mountPoint;

            $bestFs = Fs->new(device => $device, type => $fsType, mount => $mountPoint);

        }

    }