const unicode/utf8.runeErrorByte2

3 uses

	unicode/utf8 (current package)
		utf8.go#L67: 	runeErrorByte2 = tx | RuneError&maskx
		utf8.go#L382: 		p[2] = runeErrorByte2
		utf8.go#L408: 		return append(p, runeErrorByte0, runeErrorByte1, runeErrorByte2)