rem: char *tmp = 0;
add: char *tmp = NULL;
context: static char *strdup LT_PARAMS((const char *str));static char *strdup(str)     const char *str;{  char *tmp = 0;  if (str)    {      tmp = LT_DLMALLOC (char, 1+ strlen (str));      if (tmp)	{	  strcpy(tmp, str);	}    }  return tmp;}