[v19 stable hotfix - ground combat] duplicate items by mousewheel

[thixotrop]

Just recently experienced:

In ground combat. When opening the inventory of a soldier then click&hold-ing the left mousebutton to move an item, it is now possible to scroll with the mousewheel to another soldier and drop the item in that inventory. The item will be duplicated. This is repeatable.

For me this is possible with the C4 explosives.

When trying this with a weapon (in hands) or with ammo clips the game lags and crashes to desktop. I haven't tried other items yet.