HIVE-5601: NPE in ORC's PPD when using select * from table with where 
predicate pushdown (Prasanth J via Owen O'Malley and Gunther Hagleitner)


git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.12@1542024 13f79535-47bb-0310-9956-ffa450edef68