pull up r22172 from trunk

pull up r22172 from trunk
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 r22172 | epeisach | 2009-04-07 13:57:56 -0400 (Tue, 07 Apr 2009) | 9 lines
 Changed paths:
    M /trunk/src/util/ss/help.c

 ticket: 6442
 subject: Null pointer defref in adding info

 Clearly the code is broken - and we either never use it - or callers never pass
 NULL...

 Detected by clang static checker.

ticket: 6442
version_fixed: 1.7

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-7@22247 dc483132-0cff-0310-8789-dd5450dbe970