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net/packet: remove unnecessary mark

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There's no need to mask out the bottom four bits
of b[0] if we are about to shift them away.
This commit is contained in:
Josh Bleecher Snyder 2020-11-13 18:20:03 -08:00 committed by Josh Bleecher Snyder
parent efad55cf86
commit b0526e8284
1 changed files with 1 additions and 1 deletions
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2
net/packet/packet.go
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@ -111,7 +111,7 @@ func (q *Parsed) Decode(b []byte) {
return
}
q.IPVersion = (b[0] & 0xF0) >> 4
q.IPVersion = b[0] >> 4
switch q.IPVersion {
case 4:
q.decode4(b)