regression on `macro :Type`

I suppose I could just wrap it in parentheses, but it used to work. Is it fixable?

**Input file**
```haxe
switch type {
	case Foo:
		macro :Float;
}
```

**Broken output**
```haxe
switch type {
	case Foo:
		macro
	:Float;
}
```

**Expected output**
No change.
