Weapon Cooldowns are "sticky"

[XaserAcheron]

Couple of places with the mod cooldown system where you can get a cooldown 'stuck':

• Running out of ammo while firing Micro Missiles
• Changing maps while the cooldown is active

In both cases, the cooldown can be reset by switching mods, but this a) still shouldn't happen and b) can't be fixed by the player if you just have one mod, so ick! :P

TBH the cooldown system is pretty janky (it's just a temporary looping script that removes one unit of cooldown per-tic until it's done and the script expires), but it's uber-simple to work with so I'd like to keep it if possible. Potential emphasis on 'if'. :P