memory leak #4 & patch

[Kenneth Lorber]

This leak is in the diff code - which I understand from a recent thread
we don't want to change if we can avoid it.  On the other hand this leak
may have been caused by a previous change to this function (the memory
leaked is allocated by cvs_temp_name()).  Apply or not as you think
best.

Share and Enjoy,
keni

*** diff/diff3.c        Thu May 22 12:13:29 2003
--- XX/diff3.c  Thu Jun 12 13:47:36 2003
***************
*** 1360,1365 ****
--- 1360,1366 ----
    if (close (fd) != 0)
      diff3_perror_with_exit ("pipe close");
    unlink (diffout);
+   free (diffout);
  
    return diff_result + total;
  }