Roxie internal error when no dali connected
Roxie internal error when no dali connected

Roxie fails an assert if started without a dali connection. This
patch checks for a NULL notifier before trying to add it to the
notifier list.

Signed-off-by: Richard Chapman <5900d56196fe29dba8e3ae556d57eae28e9f0195@hpccsystems.com>

afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform,afishbeck/HPCC-Platform