PuTTY bug portfwd-remote-crash-2nd-change

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summary: Reconfiguring remote port forwarding twice causes a crash
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: high: This should be fixed in the next release.
fixed-in: 03e71efcc513c9f13eb25b693b011b43f1f4a2d3 (0.77)

If you use the 'Change Settings' dialog box to reconfigure PuTTY's port forwardings while a session is running, more than once, and each time, add or remove a port forwarding in the remote-to-local direction, then PuTTY could crash with a memory access error, due to bad management of an internal linked list of requests of that type that it's waiting for replies to.

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Audit trail for this bug.
(last revision of this bug record was at 2022-05-15 14:15:31 +0100)