Fix off-by-one-pointer error in an ASSERT inside DeferredHandles::Iterate.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 4b1a3a1618228faa480cb0cd686042e359e85472..72dfc647fb3ae7990106a09e8f06918c42649e51 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6514,7 +6514,7 @@ void DeferredHandles::Iterate(ObjectVisitor* v) {
   ASSERT(!blocks_.is_empty());
 
   ASSERT((first_block_limit_ >= blocks_.first()) &&
-         (first_block_limit_ < &(blocks_.first())[kHandleBlockSize]));
+         (first_block_limit_ <= &(blocks_.first())[kHandleBlockSize]));
 
   v->VisitPointers(blocks_.first(), first_block_limit_);