Fix reload handling of unwind / stackoverflow errors

runtime/vm/isolate_reload.h

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ISOLATE_RELOAD_H_
 #define VM_ISOLATE_RELOAD_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/hash_map.h"
@@ skipping 250 matching lines @@
   void InvalidateWorld();
 
   // The zone used for all reload related allocations.
   Zone* zone_;
 
   int64_t start_time_micros_;
   int64_t reload_timestamp_;
   Isolate* isolate_;
   bool reload_skipped_;
   bool reload_aborted_;
+  bool reload_finalized_;
   JSONStream* js_;
 
   intptr_t saved_num_cids_;
   RawClass** saved_class_table_;
   intptr_t num_saved_libs_;
 
   // Collect the necessary instance transformation for schema changes.
   ZoneGrowableArray<InstanceMorpher*> instance_morphers_;
 
   // Collects the reasons for cancelling the reload.
@@ skipping 62 matching lines @@
   friend class ObjectLocator;
   friend class MarkFunctionsForRecompilation;  // IsDirty.
   friend class ReasonForCancelling;
 
   static Dart_FileModifiedCallback file_modified_callback_;
 };
 
 }  // namespace dart
 
 #endif   // VM_ISOLATE_RELOAD_H_