Fix AllocationSite body descriptor to include all pointer slots.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 4efd5b31edb9ee7832697605903b274980e8c026..c67e2ef18719ed81d9659a9ec3977dccf2324e97 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -8367,9 +8367,8 @@ class AllocationSite: public Struct {
   static const int kPointerFieldsEndOffset = kWeakNextOffset;
 
   // For other visitors, use the fixed body descriptor below.
-  typedef FixedBodyDescriptor<HeapObject::kHeaderSize,
-                              kDependentCodeOffset + kPointerSize,
-                              kSize> BodyDescriptor;
+  typedef FixedBodyDescriptor<HeapObject::kHeaderSize, kSize, kSize>
+      BodyDescriptor;
 
  private:
   inline bool PretenuringDecisionMade();