Allow calling LocateWeapon() from status bar

[Blue Shadow]

I'm trying to draw the equipped weapon's slot number on the HUD, and LocateWeapon() is the function to use to get the slot. Unfortunately, it can't be called from the status bar code as things stand.

I also need it for some code to draw a list of ammunition.

[Ed the Bat]

I am highly in favor of this, as it would allow my bug report to be closed as unnecessary.

[Blue Shadow]

This got added in 3.7.0. So it can be closed.