Revert "use empty() check instead of negation"

The Porters Handbook prefers nagation.

Noticed by:	danfe

This reverts commit 6e4a99a9babee1d465161d10f6f84a4cbaa2e0a1.
Update to 23.0.1271.97 (security)
Merge remote-tracking branch 'origin/beta'

Conflicts:
	distinfo
	www/chromium/Makefile
Merge branch 'beta'
Revert "Remove shared memory keys only if no segments are attached."

The patch lead to IPC memory leaks.

This reverts commit f9f047535efdca1f2cd28b15222f180635ca4125.
Update to 24.0.1312.68
Merge branch 'master' into beta