storage/ndb/src/ndbapi/NdbBlob.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)
storage/ndb/src/ndbapi/NdbEventOperationImpl.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)
storage/ndb/test/ndbapi/test_event_merge.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)