Explicitly pass Thread::Current to MutexLock and Alloc.

Change-Id: I8b75bc0617915465f102815b32306aa7760dcae4
diff --git a/src/native/java_lang_Object.cc b/src/native/java_lang_Object.cc
index 89019f7..a6ae49d 100644
--- a/src/native/java_lang_Object.cc
+++ b/src/native/java_lang_Object.cc
@@ -23,7 +23,7 @@
 static jobject Object_internalClone(JNIEnv* env, jobject javaThis) {
   ScopedObjectAccess soa(env);
   Object* o = soa.Decode<Object*>(javaThis);
-  return soa.AddLocalReference<jobject>(o->Clone());
+  return soa.AddLocalReference<jobject>(o->Clone(soa.Self()));
 }
 
 static void Object_notify(JNIEnv* env, jobject javaThis) {