sysutils/screen*: Fix stack overflow detected on aarch64
Fix,
SCREEN[1304]: stack overflow detected; terminated
kernel: pid 1304 (screen-4.9.1), jid 0, uid 0: exited on signal 6 (core dumped)
PR: 280868
Tested by: Andreas Schwarz <bugs.freebsd.asc@schwarzes.net>
MFH: 2024Q3