pull up r22413, r22410 from trunk

pull up r22413, r22410 from trunk

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 r22413 | epeisach | 2009-06-17 13:51:31 -0400 (Wed, 17 Jun 2009) | 5 lines

 ticket: 6512

 In the previous patch - I neglected a potential NULL deref in the call
 to krb5int_yarrow_cipher_final.  Trivial fix.
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 r22410 | epeisach | 2009-06-11 13:01:13 -0400 (Thu, 11 Jun 2009) | 7 lines

 subject:  krb5int_yarrow_final could deref NULL if out of memory
 ticket: 6512
  krb5int_yarrow_final tests if the Yarrow_CTX* is valid (not NULL) -
  and if not - signals and error for return - but still invokes
  mem_zero (memset) with it as an argument.  This will only happen in
  an out-of-memory situation.

ticket: 6512
version_fixed: 1.7.1
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-7@22799 dc483132-0cff-0310-8789-dd5450dbe970