s3-winbind: Use strlcpy to avoid log entry.

s3-winbind: Use strlcpy to avoid log entry.

The full_name from Windows can be longer than 255 chars which results in
a warning on log level 0 that we have a string overflow. This will avoid
the warning. However we should fix this sooner or later on the protocol
level to have no limit.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jun  4 16:49:11 CEST 2014 on sn-devel-104