Fix for control-key state 'stuck' on FF / Chromium.
Fix for control-key state 'stuck' on FF / Chromium.

vizorvr/vizor,vizorvr/patches,vizorvr/vizor,vizorvr/vizor-create,beni55/engi,vizorvr/patches,engijs/engi,vizorvr/patches,engijs/engi,beni55/engi,beni55/engi,engijs/engi,vizorvr/patches,vizorvr/vizor-create,vizorvr/patches,vizorvr/vizor,vizorvr/vizor-create