In TClusterIterator::GetEstimatedClusterSize, properly handle the case when we need to get the cache size but the TTree is controlled by a TChain (and thus its cachesize is not set)
In TClusterIterator::GetEstimatedClusterSize, properly handle the case when we need to get the cache size but the TTree is controlled by a TChain (and thus its cachesize is not set)


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@40415 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT