Duplicated indentation with `else if`

This is a special case of #464 that's not fixed yet:

**Input file**
```haxe
return if (foo) {
	foo;
} else if (bar) {
	bar;
} else {
	foobar;
}
```

**Broken output**
```haxe
return if (foo) {
	foo;
} else if (bar) {
		bar;
} else {
		foobar;
}
```