Russell Yanofsky 654420d6df wallet: Minimal fix to restore conflicted transaction notifications ...

This fix is a based on the fix by Antoine Riard <ariard@student.42.fr> in
https://github.com/bitcoin/bitcoin/pull/18600.

Unlike that PR, which implements some new behavior, this just restores previous
wallet notification and status behavior for transactions removed from the
mempool because they conflict with transactions in a block. The behavior was
accidentally changed in two `CWallet::BlockConnected` updates:
a31be09bfd and
7e89994133 from
https://github.com/bitcoin/bitcoin/pull/16624, causing issue
https://github.com/bitcoin/bitcoin/issues/18325.

The change here could be improved and replaced with a more comprehensive
cleanup, so it includes a detailed comment explaining future considerations.

Fixes #18325

Co-authored-by: Antoine Riard <ariard@student.42.fr>

Github-Pull: #18982
Rebased-From: b604c5c8b5

2020-06-09 21:12:38 +08:00

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