Pop discard

[adray]

Pop discard instruction isn't a nice solution, additionally SunScript doesn't seem to handle passing return value into another function in all cases.

• Consider functions returning either VOID, the whether it returned a value
• If the return value isn't used it needs to be discarded
• If it doesn't return anything and it should be an error

[adray]

Pop discard errorously pops the 5 which is pushed as part of the + 5

var foo = -10;
Print(foo);
function Test1() {
    Print("Test");
    return 5;
}
function Test2(x) {
    Print("Foo: " + x);
}
var x = 2 + Test1();
Print(x);
Test2(Test1() + 5);