If an `if` haven't had braces, the code used to check itself for an
`else` after it, eating the next token if it wasn't actually an `else`.

So, drop the check for the else altogether since parseLine() handles
`else`s by calling parseIf() anyway.

This fixes constructs like:

	if (foo)
		bar();
	function baz() {
		// ...
	}

Closes #3568542.