[rhq-project/rhq] 87a0c2: [BZ 185375] add null check on shutdown

[John Sanda]

  Branch: refs/heads/master
  Home:   https://github.com/rhq-project/rhq
  Commit: 87a0c2078c5021ee93c5358e7dce18b3e11db99e
      https://github.com/rhq-project/rhq/commit/87a0c2078c5021ee93c5358e7dce18b...
  Author: John Sanda <jsanda(a)redhat.com&gt;
  Date:   2015-03-16 (Mon, 16 Mar 2015)

  Changed paths:
    M
modules/common/cassandra-schema/src/main/java/org/rhq/cassandra/schema/MigrateAggregateMetrics.java

  Log Message:
  -----------
  [BZ 185375] add null check on shutdown

This check was here but lost in some of the prior merge conflicts.