[compiletime] `BlzGroupRemoveGroupFast` must return the number of removed units

[GetLocalPlayer]

@Test
function test()
	unit array u
	for i = 0 to 9
		u[i] = createUnit(localPlayer, 'hfoo', ZERO2, angle(0))
	let g = CreateGroup()
	let a = CreateGroup()
	..add(u[0], u[1], u[2], u[3], u[4])
	let b = CreateGroup()
	..add(u[2], u[3], u[4], u[5])
	print(BlzGroupAddGroupFast(a, g))
	print(BlzGroupAddGroupFast(b, g))
	print("size = " + g.size().toString())
	print(BlzGroupRemoveGroupFast(a, g))
	print(BlzGroupRemoveGroupFast(b, g))
	print("size = " + g.size().toString())


init
	doAfter(1) ->
		test()

Ingame output:

Compiletime output:

Running <Hello:6 - test>..
5
1
size = 6
1
0
size = 0
	OK!
Tests succeeded: 1/1

[Frotty]

thx for these detailed reports 👍