src/hotspot/share/gc/parallel/parallelScavengeHeap.hpp

8221260: Initialize more class members on construction, remove some unused ones
Reviewed-by:

   inline void death_march_check(HeapWord* const result, size_t size);
   HeapWord* mem_allocate_old_gen(size_t size);
 
  public:
   ParallelScavengeHeap(GenerationSizer* policy) :
-    CollectedHeap(), _collector_policy(policy), _death_march_count(0) { }
+    CollectedHeap(),
+    _collector_policy(policy),
+    _gens(NULL),
+    _death_march_count(0),
+    _young_manager(NULL),
+    _old_manager(NULL),
+    _eden_pool(NULL),
+    _survivor_pool(NULL),
+    _old_pool(NULL) { }
 
   // For use by VM operations
   enum CollectionType {
     Scavenge,
     MarkSweep