pull up r23912 from trunk

pull up r23912 from trunk

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 r23912 | tlyu | 2010-04-20 17:12:10 -0400 (Tue, 20 Apr 2010) | 11 lines

 ticket: 6702
 target_version: 1.8.2
 tags: pullup

 Fix CVE-2010-1230 (MITKRB5-SA-2010-004) double-free in KDC triggered
 by ticket renewal.  Add a test case.

 See also http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=577490

 Thanks to Joel Johnson and Brian Almeida for the reports.

ticket: 6702
version_fixed: 1.8.2
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-8@23914 dc483132-0cff-0310-8789-dd5450dbe970