RtlAppendUnicodeStringToString

NTSTATUS __stdcall RtlAppendUnicodeStringToString(_UNICODE_STRING *Destination, _UNICODE_STRING *Source){
  size_t Length; 
  wchar_t *v4; 

  Length = Source->Length;
  if( !(_WORD)Length )
    return 0;
  if( Destination->Length + Length <= Destination->MaximumLength )
  {
    v4 = &Destination->Buffer[(unsigned __int64)Destination->Length >> 1];
    memmove(v4, Source->Buffer, Length);
    Destination->Length += Length;
    if( (unsigned int)Destination->Length + 1 < Destination->MaximumLength )
      v4[(unsigned __int64)Length >> 1] = 0;
    return 0;
  }
  return -1073741789;
}

Referenced by: