Revert "Revert "Fix an outstanding compaction bug in interpreter.""

Fixed the generic trampoline to not use ToJObject when unnecessary.

Bug: 15167269

This reverts commit 3bdb873122964da7937eb070cbcf2ef638a8e459.

Change-Id: I0525d0e0f3afb753c770e1572070a0fa22b02271
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index d38f37f..0ba3206 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -424,10 +424,10 @@
       Runtime* runtime = Runtime::Current();
       if (runtime != nullptr) {
         ScopedObjectAccess soa(Thread::Current());
-        StackHandleScope<2> hs(soa.Self());
+        StackHandleScope<1> hs(soa.Self());
         Handle<mirror::DexCache> dex_cache(
             hs.NewHandle(runtime->GetClassLinker()->FindDexCache(dex_file)));
-        auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr));
+        NullHandle<mirror::ClassLoader> class_loader;
         verifier::MethodVerifier verifier(&dex_file, &dex_cache, &class_loader, &class_def,
                                           code_item, dex_method_idx, nullptr, method_access_flags,
                                           true, true);