Improvement: Shuold detect as compiler error/warning when passing divert value without Arrow...

Test code... (correct format)

```
-> ChooseManueverListAtk("massweapons", 5, 14, ORIENTATION_AGGRESSIVE, 6,7,4,5, 1, 0, -1, ->GameStart)

=== GameStart
Game starts.
->DONE

=== ChooseManueverListAtk(profeciencyType, profeciencyLevel, diceAvailable, orientation, ATN, ATN2, ATN_off, ATN2_off, blunt, hasShield, _confirmSelection, ->_callbackThread )
// code removed for brevity
->_callbackThread
```

vs

with typo without `->` behind `GameStart`:
`-> ChooseManueverListAtk("massweapons", 5, 14, ORIENTATION_AGGRESSIVE, 6,7,4,5, 1, 0, -1, GameStart)`

Compiler passes it without error, but during running scenerio, it will get a runtime error with the _callbackThread divert, stating that the the value is null/empty/zero. So, it seems `GameStart` passes, but strangely resolves to `0`? Shouldn't the compiler detect an error? Why does it allow it to pass?