Re: master 0da97d6: * src/keyboard.c (timer_check_2): Replace redundant test with assertion

[Eli Zaretskii]

IMNSHO, this change is dangerous: it replaces run-time conditions with
assertions, but IME most if not all of the active developers and
people who track the master branch don't compile with --enable-checking,
or don't run the trunk build on a regular basis.  Which means these
assertions, if they happen, will not be seen nor reported.

So basically you removed a safety net without any replacement.

I suggest to revert this change.  It gains us nothing of importance.