ObjPtr<>-ify mirror::ObjectArray.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 31113334
Change-Id: I611b3e49d3feed306f6cd35d2b662a1e727e24c6
diff --git a/runtime/interpreter/unstarted_runtime_test.cc b/runtime/interpreter/unstarted_runtime_test.cc
index a8ee23a..495039c 100644
--- a/runtime/interpreter/unstarted_runtime_test.cc
+++ b/runtime/interpreter/unstarted_runtime_test.cc
@@ -132,7 +132,7 @@
     CHECK_EQ(array->GetLength(), 3);
     CHECK_EQ(data.NumberOfReferences(), 3U);
     for (size_t i = 0; i < 3; ++i) {
-      EXPECT_EQ(data.GetReference(i), array->Get(static_cast<int32_t>(i))) << i;
+      EXPECT_OBJ_PTR_EQ(data.GetReference(i), array->Get(static_cast<int32_t>(i))) << i;
     }
   }