Segfault in the NDR printing routines

[Volker Lendecke]

Hi, Jelmer!

While trying to chase down a remote shutdown segfault I've
come across a bug in the NDR printing routines:

Look at ndr_print_initshutdown_String in current 3_0. In
line 99 we check if r->name is NULL, after having
dereferenced it in line 95. I'm talking about
winreg_InitiateSystemShutdown with a NULL message string. It
is trivial to reproduce: On an XP box do a "shutdown -s -m
\\samba-server" with current 3_0 as server.

Volker
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