rm empty slice alloc
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@ -175,7 +175,7 @@ func (t *tagTracer) nearFirstPeers(msg *Message) []peer.ID {
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defer t.Unlock()
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peersMap, ok := t.nearFirst[t.msgID(msg.Message)]
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if !ok {
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return []peer.ID{}
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return nil
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}
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peers := make([]peer.ID, 0, len(peersMap))
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for p := range peersMap {
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