False positive G115: integer overflow conversion rune -> byte

[mholt]

This code:

const maxByte = 255
asRunes := []rune(malformed)
final := make([]byte, len(asRunes))
for i, r := range asRunes {
	if r > maxByte {
		continue
	}
	final[i] = byte(r) // <-- FALSE POSITIVE? G115 here
}

produces a false positive on the marked line, I think.

Just above it, we skip that line if r > maxByte, and maxByte is const 255. So, it should never overflow right?