added checks to prevent segfault error when running openchange provision script

[Andrew Bartlett]

On Wed, 2009-04-22 at 13:48 +0300, Anatoliy Atanasov wrote:
> Hi Andrew,
>  
> I have added some code to check the result of dsdb_class_by_lDAPDisplayName 
> in schema_subclasses and schema_create_subclasses in schema_inferiors.c. 
> I’ve found that running the openchange provision script leads to segfaults in these places.
> Perhaps this is not the best way to handle this but it works for now.
 
This certainly seems like a reasonable stop-gap.  We should have a real
check for validity in the schema_fsmo code for all 'add' operations. 

Andrew Bartlett
-- 
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org
Samba Developer, Red Hat Inc.
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