[Bug 57607] New: wineserver: crashes with pre-existing HCU\WineTest\subkey

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57607

Bug ID: 57607
           Summary: wineserver: crashes with pre-existing
                    HCU\WineTest\subkey
           Product: Wine
           Version: 10.0-rc3
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wineserver
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 77729
  --> https://bugs.winehq.org/attachment.cgi?id=77729
wineserver-crash-ntdll-reg-with-leftover.txt

Somehow I managed to interrupt the ntdll:reg test,
so I got the HCU\WineTest not properly deleted.
A following run of the ntdll:reg test makes wineserver crash.

Attached file shows the last lines from user.reg, which transferred to
another prefix cause there the same wineserver crash with ntdll:reg test.
Also backtraces of the req_create_key, req_delete_key
and the crashing req_save_registry.

It looks like the key gets deleted but somehow some parent references
still this object.