return sXPCOMPath;
GRE_GetGREPathWithProperties(&version, 1, nsnull, 0, sXPCOMPath, MAXPATHLEN); if (*sXPCOMPath) return sXPCOMPath;  return nsnull;
GRE_GetXPCOMPath(){  const char* grePath = GRE_GetGREPath();  if (!grePath) {    grePath = getenv("MOZILLA_FIVE_HOME");    if (!grePath || !*grePath) {      return nsnull;    }  }  sprintf(sXPCOMPath, "%s" XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL, grePath);  return sXPCOMPath;}