Merge tag 'migration-20241113-pull-request' of https://gitlab.com/peterx/qemu into staging

Migration pull request for 9.2-rc1

- Dmitry's small patch to quiesce a warning in possible uint32_t overflow
- Peter's fix on a recent regression to iotests (and potentially elsewhere)

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* tag 'migration-20241113-pull-request' of https://gitlab.com/peterx/qemu:
  migration: fix-possible-int-overflow
  migration: Check current_migration in migration_is_running()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>