[CRT] advpack:DelNode crashes

advpack:DelNode testcase.
crashes in 0.4.15-dev-6621-g7cbca9a.
It started to crash by some yet unknown commit during 0.4.15-dev'ing. Most likely it was a Wine-sync.

Entered debugger on first-chance exception (Exception Code: 0xc0000005) (Page Fault)
Memory at 0x0000000C could not be accessed

kdb:> bt
Eip:
<msvcrt.dll:12a75 (sdk/lib/crt/stdio/file.c:1198 (_lock_file))>
Frames:
<msvcrt.dll:15442 (sdk/lib/crt/stdio/file.c:2785 (fclose))>
<advpack_apitest.exe:12a3 (modules/rostests/apitests/advpack/DelNode.c:428 (func_DelNode))>
<advpack_apitest.exe:1b79 (sdk/include/reactos/wine/test.h:873 (run_test))>
<advpack_apitest.exe:283e (sdk/include/reactos/wine/test.h:930 (main))>
<advpack_apitest.exe:2d9d (sdk/lib/crt/startup/crtexe.c:311 (__tmainCRTStartup))>
<advpack_apitest.exe:2e14 (sdk/lib/crt/startup/crtexe.c:192 (mainCRTStartup))>
<kernel32.dll:11b41 (dll/win32/kernel32/client/proc.c:465 (BaseProcessStartup))>