Prevent MSG passthrough

[rmrocks01]

Clicks can be made to miss if the user of a script is moving their mouse around on the wiz window. Mouse messages not sent by WW should be ignored to prevent this. Consider having a wndproc hook return true early if this is the case?

[StarrFox]

Can you provide reproduction steps for this issue

[rmrocks01]

Start a combat script and move your mouse around in circles above the cards on the wiz window while the script tries to cast spells.