Parallel recompilation: fix off-by-one in deferred handle scope iteration.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index faba6de0a10f797faefa059ecfcf9fe51c3e4ff2..e1dd2ee4c675cba73de3d7c73178787bfe264c99 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6970,7 +6970,7 @@ void HandleScopeImplementer::IterateThis(ObjectVisitor* v) {
   for (int i = blocks()->length() - 2; i >= 0; --i) {
     Object** block = blocks()->at(i);
     if (last_handle_before_deferred_block_ != NULL &&
-        (last_handle_before_deferred_block_ < &block[kHandleBlockSize]) &&
+        (last_handle_before_deferred_block_ <= &block[kHandleBlockSize]) &&
         (last_handle_before_deferred_block_ >= block)) {
       v->VisitPointers(block, last_handle_before_deferred_block_);
       ASSERT(!found_block_before_deferred);