[Bug 35377] New: League of Legends launcher crashes on start

http://bugs.winehq.org/show_bug.cgi?id=35377

Bug ID: 35377
           Summary: League of Legends launcher crashes on start
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcp
          Assignee: [e-mail]
          Reporter: [e-mail]
    Classification: Unclassified
   Regression SHA1: 50e3f110d00f698ab17cd90064a2e7e538c855b9

Current head: 8953c74e349928a5c81d3cea9ffe264c81c3ab65
I ran a regression test and found 50e3f110d00f698ab17cd90064a2e7e538c855b9 to
be the cause for the League of Legends launcher to crash on start.

This does not happen with vanilla wine 1.7.10.

I am running Debian x86_64 jessie/sid.

8<-----
000d:Call KERNEL32.WideCharToMultiByte(0000fde9,00000000,00172a78 L"JPEG
Image",ffffffff,00000000,00000000,00000000,00000000) ret=7ee60198
000d:Ret  KERNEL32.WideCharToMultiByte() retval=0000000b ret=7ee60198
000d:Call ntdll.RtlAllocateHeap(00110000,00000000,0000000b) ret=7ee601c5
000d:Ret  ntdll.RtlAllocateHeap() retval=00172a28 ret=7ee601c5
000d:Call KERNEL32.WideCharToMultiByte(0000fde9,00000000,00172a78 L"JPEG
Image",ffffffff,00172a28,0000000b,00000000,00000000) ret=7ee60212
wine: Unhandled page fault on write access to 0x00000000 at address 0x40aae3
(thread 002f), starting debugger...
000d:Ret  KERNEL32.WideCharToMultiByte() retval=0000000b ret=7ee60212
000d:Call shlwapi.AssocQueryStringW(00000000,0000000f,0013b2a8
L".jfif",00000000,00000000,0033fadc) ret=7ee657fa
000d:Call
shell32.SHCoCreateInstance(00000000,0033fa00,00000000,7e6b971c,0033fa30)
ret=7e67defc
000d:Call ntdll.RtlAllocateHeap(00110000,00000000,00000018) ret=7e475e68
000d:Ret  ntdll.RtlAllocateHeap() retval=0013b068 ret=7e475e68
8<-----