Don't record elements transition slots since it will contain a map.

src/transitions.cc

Index: src/transitions.cc
diff --git a/src/transitions.cc b/src/transitions.cc
index f2e49ecafec3af954a24602e42a85f5f2f1a7707..5dda18eddf8559a09ae7aa8e1cef5a8d1204720a 100644
--- a/src/transitions.cc
+++ b/src/transitions.cc
@@ -69,10 +69,8 @@ static bool InsertionPointFound(String* key1, String* key2) {
 MaybeObject* TransitionArray::NewWith(String* name, Map* target) {
   TransitionArray* result;
 
-  { MaybeObject* maybe_array;
-    maybe_array = TransitionArray::Allocate(1);
-    if (!maybe_array->To(&result)) return maybe_array;
-  }
+  MaybeObject* maybe_array = TransitionArray::Allocate(1);
+  if (!maybe_array->To(&result)) return maybe_array;
 
   FixedArray::WhitenessWitness witness(result);