fix: fix CJK filename can not open issue

[ttys3]

the bug will cause CJK chars in filename been stripped out.

for example:

/media/mydisk/fooにほん.rar will result in /media/mydisk/foo　so the open will fail

due to

    std::string AnsiArcName;
    if (r->ArcName!=nullptr)
    {
      AnsiArcName=r->ArcName;
      if (!AreFileApisANSI())
        IntToExt(r->ArcName,AnsiArcName);
    }

    std::wstring ArcName;
    if (r->ArcNameW!=nullptr && *r->ArcNameW!=0)
      ArcName=r->ArcNameW;
    else
      CharToWide(AnsiArcName,ArcName);

    Data->Cmd.AddArcName(ArcName);
    Data->Cmd.Overwrite=OVERWRITE_ALL;
    Data->Cmd.VersionControl=1;

    Data->Cmd.Callback=r->Callback;
    Data->Cmd.UserData=r->UserData;

    // Open shared mode is added by request of dll users, who need to
    // browse and unpack archives while downloading.
    Data->Cmd.OpenShared = true;
    if (!Data->Arc.Open(ArcName,FMF_OPENSHARED))
    {
      r->OpenResult=ERAR_EOPEN;
      delete Data;
      return NULL;
    }

in Data->Arc.Open it will do WideToChar which cause the CJK bytes got lost.

but if it calls CharToWide first (when ArcNameW is nullptr), when it do the reverse, it get the right filename back.

[muja]

I don't know why I cannot run checks on this PR... GitHub is really annoying... I opened #54 and some checks fail, can you check over there?

[ttys3]

I don't know why I cannot run checks on this PR... GitHub is really annoying... I opened #54 and some checks fail, can you check over there?

OK, I'll close this one