1) Handle not started nodes in dump 1000 (check for division by 0)
  2) Make sure to init variables in constructor


ndb/src/common/debugger/EventLogger.cpp:
  Handle not started nodes
ndb/src/kernel/blocks/dbacc/DbaccInit.cpp:
  Init variables in constructor
ndb/src/kernel/blocks/dbacc/DbaccMain.cpp:
  Handle not started nodes
ndb/src/kernel/blocks/dbtup/DbtupGen.cpp:
  Init variables in constructor
  Handle not started nodes