rem: const char *p, *q = NULL;
add: const char *p, *q = 0;
context: static const char *strrchr LT_PARAMS((const char *str, int ch));static const char*strrchr(str, ch)     const char *str;     int ch;{  const char *p, *q = NULL;  for (p = str; *p != LT_EOS_CHAR; ++p)    {      if (*p == (char) ch)	{	  q = p;	}    }  return q;}