wrong error for _x in forEach is never assigned

[JasperRab]

When assigning a _x inside a forEach to an private variable, a warning shows up that the Private variable '_x' is never assigned.
When using it directly in the code it works fine.
When using it with an global variable it also seems to work, but it might get ignored due to #55.

[X39]

{
    diag_log _x;
} forEach [1, 2, 3];
    
{
    private _value _x;
    diag_log _value;
} forEach [1, 2, 3],

{
    value = _x;
    diag_log value;
} forEach [1, 2, 3];