lib: Fix FRCT seqno leak on rxm alloc failure

The seqno was committed before calling rxm_arm, whose malloc could
fail and silently leave the seqno without a retransmission entry. None
of the recovery paths (RTO timer, RACK, SACK-driven, NACK-driven) can
repair a slot with NULL rxm, so the gap persists until the receiver's
keepalive marks the flow dead.

This fix splits rxm_arm into rxm_alloc plus rxm_arm (post-state
install). sack_rxm_snd follows the same alloc-then-arm shape.

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

0 files changed, 0 insertions, 0 deletions