[Bug 37411] New: ntdll/tests/reg.c fails / wineserver crashes running ntdll/reg test from winetest

https://bugs.winehq.org/show_bug.cgi?id=37411

Bug ID: 37411
           Summary: ntdll/tests/reg.c fails / wineserver crashes running
                    ntdll/reg test from winetest
           Product: Wine
           Version: 1.7.28
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, regression, source
          Severity: normal
          Priority: P2
         Component: wineserver
          Assignee: [e-mail]
          Reporter: [e-mail]
   Regression SHA1: e94d2e045960978f8c48c4e9527f88f1229bf4be
      Distribution: ---

../../../tools/runtest -q -P wine -T ../../.. -M ntdll.dll -p ntdll_test.exe.so
reg && touch reg.ok
reg.c:1309: Test failed: got 4, expected 86
reg.c:1319: Test failed: got L"WineTest", expected
L"\Registry\User\S-1-5-21-0-0-0-1000\WineTest"
Makefile:413: recipe for target 'reg.ok' failed
make: *** [reg.ok] Error 2

This change also breaks running the tests from winetest (at least for me on
Fedora, and looking at https://tests.winehq.org, it appears every linux machine
is affected).

Manually running this test explicitly with winetest shows wineserver is
crashing:
*** Error in `/home/austin/wine-git/server/wineserver': double free or
corruption (!prev): 0x09d06b68 ***
wineserver crashed, please enable coredumps (ulimit -c unlimited) and restart.

and after running ulimit -c unlimited:
Running: ntdll:reg (15 of 20)
*** Error in `/home/austin/wine-git/server/wineserver': double free or
corruption (!prev): 0x08bc3ba0 ***
*** Error in `/home/austin/wine-git/server/wineserver': malloc(): memory
corruption: 0x08bc3c00 ***
Inconsistency detected by ld.so: dl-open.c: 220: dl_open_worker: Assertion
`_dl_debug_initialize (0, args->nsid)->r_state == RT_CONSISTENT' failed!

reverting e94d2e045960978f8c48c4e9527f88f1229bf4be allows the test to pass