pull up r22369 from trunk

 ------------------------------------------------------------------------
 r22369 | ghudson | 2009-05-24 17:53:51 +0200 (Sun, 24 May 2009) | 11 lines

 ticket: 6496
 subject: Fix vector initialization error in KDC preauth code
 target_version: 1.7
 tags: pullup

 In the KDC, get_preauth_hint_list had two bugs initializing the
 preauth array.  It was allocating 21 extra entries instead of two due
 to a typo (harmless), and it was only zeroing up through one extra
 entry (harmful).  Adjust the code to use calloc to avoid further
 disagreements of this nature.

https://github.com/krb5/krb5/commit/1cb0f0b803cfffa7a9130a073dc810352b984267
Commit By: tlyu
Revision: 22377
Changed Files:
U   branches/krb5-1-7/src/kdc/kdc_preauth.c