fix crash on Chex intermission

[rfomin]

Fix #1367

Taken from chocolate-doom/chocolate-doom@7dcb9c7

[fabiangreffrath]

What has happened here? The "You are here" patch doesn't fit on screen, so it iterates to find a new one, but there isn't any and so it crashed?

[fabiangreffrath]

What has happened here? The "You are here" patch doesn't fit on screen, so it iterates to find a new one, but there isn't any and so it crashed?

Similar, but the splash patch was actually at fault:
coelckers/prboom-plus@f92800d

Strange, I think I have played through Chex several times already with my son. 🤔

[rfomin]

Strange, I think I have played through Chex several times already with my son. 🤔

It works for me in the RelWithDebInfo build, but crashes in the Release. With code like this, I don't think we should enable all compiler warnings 😉

[fabiangreffrath]

It works for me in the RelWithDebInfo build, but crashes in the Release. With code like this, I don't think we should enable all compiler warnings 😉

Or even more, so we have a chance to catch this stuff earlier. 😉