const PRUnichar* string = mString.GetUnicode();
const PRUnichar* string = mString.get();
PRUint32 FontAliasKey::HashCode(void) const{  PRUint32 hash = 0;  const PRUnichar* string = mString.GetUnicode();  PRUnichar ch;  while ((ch = *string++) != 0) {    // FYI: hash = hash*37 + ch    ch = nsCRT::ToUpper(ch);    hash = ((hash << 5) + (hash << 2) + hash) + ch;  }  return hash;}