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cb729fb64d
Reset ->prev and ->next fields of a coalesced TX packet to ensure it cannot access several times its neighbours after it is supposed to be detached from them calling quic_tx_packet_dgram_detach(). There are two cases where a packet can be coalesced to another previous built one: this is when it is built into the same datagrame without GSO (and flagged flag with QUIC_FL_TX_PACKET_COALESCED) or when sent from the same sendto() syscall with GOS (not flagged with QUIC_FL_TX_PACKET_COALESCED). This fix may be in relation with GH #2839. Must be backported as far as 2.6.