Question about check composite

[oovm]

Why not return !is_prime here, when would third branch happens?

num-primes/src/lib.rs

Lines 194 to 206 in 5a75765

	pub fn is_composite(n: &BigUint) -> bool {
	let x: bool = is_prime(n);
	if x == true {
	return false
	}
	else if x == false {
	return true
	}
	else {
	panic!("An Error Has Occured On Checking Composite Number");
	}
	}