shlwapi: Fix ASSOC_GetExecutable not to use uninitialised variable.

[wine] / dlls / version / version.spec

@ stdcall GetFileVersionInfoA(str long long ptr)
@ stdcall GetFileVersionInfoSizeA(str ptr)
@ stdcall GetFileVersionInfoSizeW(wstr ptr)
@ stdcall GetFileVersionInfoW(wstr long long ptr)
@ stdcall VerFindFileA(long str str str ptr ptr ptr ptr)
@ stdcall VerFindFileW(long wstr wstr wstr ptr ptr ptr ptr)
@ stdcall VerInstallFileA(long str str str str str ptr ptr)
@ stdcall VerInstallFileW(long wstr wstr wstr wstr wstr ptr ptr)
@ stdcall VerLanguageNameA(long str long) kernel32.VerLanguageNameA
@ stdcall VerLanguageNameW(long wstr long) kernel32.VerLanguageNameW
@ stdcall VerQueryValueA(ptr str ptr ptr)
@ stdcall VerQueryValueW(ptr wstr ptr ptr)