Fixed an issue with HConstant::InNewSpace() for parallel compilation.

src/optimizing-compiler-thread.h

Index: src/optimizing-compiler-thread.h
diff --git a/src/optimizing-compiler-thread.h b/src/optimizing-compiler-thread.h
index 8cb5e2dd59dec0e26d81984e8d929d3e613ae8c0..79e07e06b246a2e341a4c3426db0ebe9859aae7f 100644
--- a/src/optimizing-compiler-thread.h
+++ b/src/optimizing-compiler-thread.h
@@ -44,9 +44,7 @@ class OptimizingCompilerThread : public Thread {
  public:
   explicit OptimizingCompilerThread(Isolate *isolate) :
       Thread("OptimizingCompilerThread"),
-#ifdef DEBUG
       thread_id_(0),
-#endif
       isolate_(isolate),
       stop_semaphore_(OS::CreateSemaphore(0)),
       input_queue_semaphore_(OS::CreateSemaphore(0)),
@@ -76,9 +74,7 @@ class OptimizingCompilerThread : public Thread {
     return (current_length < FLAG_parallel_recompilation_queue_length);
   }
 
-#ifdef DEBUG
   bool IsOptimizerThread();
-#endif
 
   ~OptimizingCompilerThread() {
     delete input_queue_semaphore_;
@@ -86,9 +82,7 @@ class OptimizingCompilerThread : public Thread {
   }
 
  private:
-#ifdef DEBUG
   int thread_id_;
-#endif
 
   Isolate* isolate_;
   Semaphore* stop_semaphore_;