Although it can't actually happen, make it more explicit that we won't
dereference a null mech in the cleanup handler of the mechglue's
gss_accept_sec_context.


https://github.com/krb5/krb5/commit/8647bcedc38882da7ea1c22c973faedc0b571ceb
Commit By: ghudson
Revision: 24701
Changed Files:
U   trunk/src/lib/gssapi/mechglue/g_accept_sec_context.c