Call WaitLSNCleanup() in AbortTransaction()
Even though waiting for replay LSN happens without explicit transaction,
AbortTransaction() is responsible for the cleanup of the shared memory if
the error is thrown in a stored procedure. So, we need to do WaitLSNCleanup()
there to clean up after some unexpected error happened while waiting for
replay LSN.
Discussion: https://postgr.es/m/
202404051815.eri4u5q6oj26%40alvherre.pgsql
Author: Alvaro Herrera