[Bug 36920] New: valgrind shows several unitialized variables in dlls/ieframe/tests/ie.c (nsCSSStyleSheet::Release)

https://bugs.winehq.org/show_bug.cgi?id=36920

Bug ID: 36920
           Summary: valgrind shows several unitialized variables in
                    dlls/ieframe/tests/ie.c (nsCSSStyleSheet::Release)
           Product: Wine
           Version: 1.7.22
          Hardware: x86
                OS: Linux
            Status: NEW
          Keywords: download, source, testcase, valgrind
          Severity: normal
          Priority: P2
         Component: ieframe
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 49033
  --> https://bugs.winehq.org/attachment.cgi?id=49033
valgrind log

I'll attach the full log, there are several. Here's an example one:

==13178== Conditional jump or move depends on uninitialised value(s)
==13178==    at 0x101E872F: nsCSSStyleSheet::Release (in
/home/austin/.wine/drive_c/windows/system32/gecko/2.24/wine_gecko/xul.dll)
==13178==    by 0x1015FE43: PresShell::SetPrefNoScriptRule
(nspresshell.cpp:1271)
==13178==    by 0x1016182B: PresShell::SetPreferenceStyleRules
(nspresshell.cpp:1156)
==13178==    by 0x1029F7A1: nsDocument::doCreateShell (nsdocument.cpp:3442)
==13178==    by 0x103634E9: nsHTMLDocument::CreateShell
(nshtmldocument.cpp:313)
==13178==    by 0x1014C25F: nsDocumentViewer::InitPresentationStuff
(nsdocumentviewer.cpp:701)
==13178==    by 0x1014C837: nsDocumentViewer::InitInternal
(nsdocumentviewer.cpp:947)
==13178==    by 0x1014D13C: nsDocumentViewer::Init (nsdocumentviewer.cpp:683)
==13178==    by 0x109B3C6C: nsCOMPtr_base::assign_from_qi_with_error
(nscomptr.cpp:65)
==13178==    by 0x800EEB43: ???
==13178==  Uninitialised value was created by a client request
==13178==    at 0x7BC4BF0A: mark_block_uninitialized (heap.c:209)
==13178==    by 0x7BC4C075: initialize_block (heap.c:240)
==13178==    by 0x7BC50981: RtlAllocateHeap (heap.c:1717)
==13178==    by 0x77D819E: msvcrt_heap_alloc (heap.c:70)
==13178==    by 0x77D8D63: MSVCRT_malloc (heap.c:408)
==13178==    by 0x80C71095: moz_xmalloc (mozalloc.cpp:54)
==13178==    by 0x109B96F7: NS_InitXPCOM2 (nsxpcominit.cpp:464)
==13178==    by 0x7584F26: init_xpcom (nsembed.c:698)
==13178==    by 0x7585399: load_gecko (nsembed.c:774)
==13178==    by 0x7589D01: create_nscontainer (nsembed.c:2042)
==13178==    by 0x750A2F6: HTMLDocument_Create (htmldoc.c:4756)
==13178==    by 0x7573F7D: ClassFactory_CreateInstance (main.c:238)
==13178==    by 0x5038C6B: CoCreateInstance (unknwn.h:226)
==13178==    by 0x4D63202: create_mime_object (binding.c:258)
==13178==    by 0x4D635A2: create_object (binding.c:308)
==13178==    by 0x4D660AB: report_data (binding.c:1077)
==13178==    by 0x4D663F4: InternetProtocolSink_ReportData (binding.c:1126)
==13178==    by 0x4D6B723: ProtocolSinkHandler_ReportData (urlmon.h:3113)
==13178==    by 0x4D6C274: report_data_proc (urlmon.h:3113)
==13178==    by 0x4D67FCF: process_tasks (bindprot.c:57)
==13178==