[MONDRIAN-2476] deadlock encountered between DynamicContentFinder and distributed cache - fixed possible NPE
[MONDRIAN-2476] deadlock encountered between DynamicContentFinder and distributed cache
- fixed possible NPE

truvenganong/mondrian,pentaho/mondrian,dkincade/mondrian,ivanpogodin/mondrian,pedrofvteixeira/mondrian,ivanpogodin/mondrian,pentaho/mondrian,dkincade/mondrian,pedrofvteixeira/mondrian,truvenganong/mondrian,pentaho/mondrian,dkincade/mondrian,ivanpogodin/mondrian,truvenganong/mondrian,pedrofvteixeira/mondrian