Fix BytecodeArray::BodyDescriptor::SizeOf().

src/objects-body-descriptors-inl.h

Index: src/objects-body-descriptors-inl.h
diff --git a/src/objects-body-descriptors-inl.h b/src/objects-body-descriptors-inl.h
index 8fe507ea3c07533e7667ea95c1c0193200379b9b..2c07f23e906b8e474f91ae4b97971b745c877849 100644
--- a/src/objects-body-descriptors-inl.h
+++ b/src/objects-body-descriptors-inl.h
@@ -234,9 +234,8 @@ class BytecodeArray::BodyDescriptor final : public BodyDescriptorBase {
     IteratePointer<StaticVisitor>(heap, obj, kConstantPoolOffset);
   }
 
-  static inline int SizeOf(Map* map, HeapObject* object) {
-    return SizeFor(
-        reinterpret_cast<FixedArray*>(object)->synchronized_length());
+  static inline int SizeOf(Map* map, HeapObject* obj) {
+    return reinterpret_cast<BytecodeArray*>(obj)->BytecodeArraySize();
   }
 };