Move linked list for RPO order into BasicBlock itself.

src/compiler/schedule.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/node.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/schedule.h"
 #include "src/ostreams.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 BasicBlock::BasicBlock(Zone* zone, Id id)
     : ao_number_(-1),
       rpo_number_(-1),
       deferred_(false),
       dominator_depth_(-1),
       dominator_(NULL),
+      rpo_next_(NULL),
       loop_header_(NULL),
       loop_end_(NULL),
       loop_depth_(0),
       control_(kNone),
       control_input_(NULL),
       nodes_(zone),
       successors_(zone),
       predecessors_(zone),
       id_(id) {}
 
@@ skipping 280 matching lines @@
       }
       os << "\n";
     }
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8