single player crash fullscreen

[namtsui]

Reporting a bug? Please make sure you've given the following information - thanks!

Operating system and version:

OpenBSD amd64. openjk-0.0.0.20191129 eed60925ad1b0d513d3747264f3bf98615fa4b2a

Is this for single player or multiplayer?

single player

Description of the bug (and if possible, steps to reproduce the bug):

Toggling fullscreen in the single player binary (jasp) causes the game to crash. Multiplayer (jamp) is able to toggle fullscreen fine.

What did you expect to happen instead?

Fullscreen is toggled without crashing.

[namtsui]

/cc @ibara