Fix a bug in compilation of try-finally.

runtime/vm/parser.h

 // Copyright (c) 2012, 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_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "lib/invocation_mirror.h"
@@ skipping 668 matching lines @@
   // When parsing a function, this is the library in which the function
   // is defined. This can be the library in which the current_class_ is
   // defined, or the library of a mixin class where the function originates.
   Library& library_;
 
   // List of try blocks seen so far, this is used to generate inlined finally
   // code at all points in the try block where an exit from the block is
   // done using 'return', 'break' or 'continue' statements.
   TryBlocks* try_blocks_list_;
 
+  // Each try in this function gets its own try index.
+  intptr_t AllocateTryIndex() { return ++last_used_try_index_; }
+  intptr_t last_used_try_index_;
+
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_