chore: add WaitReadFrom support in ssr

adapter/outbound/hysteria.go

@@ -19,7 +19,6 @@ import (
 	"github.com/metacubex/quic-go/congestion"
 	M "github.com/sagernet/sing/common/metadata"
 
-	N "github.com/Dreamacro/clash/common/net"
 	"github.com/Dreamacro/clash/component/dialer"
 	"github.com/Dreamacro/clash/component/proxydialer"
 	tlsC "github.com/Dreamacro/clash/component/tls"
@@ -325,7 +324,6 @@ func (c *hyPacketConn) WaitReadFrom() (data []byte, put func(), addr net.Addr, e
 		return
 	}
 	data = b
-	put = N.NilPut
 	addr = M.ParseSocksaddr(addrStr).UDPAddr()
 	return
 }