Don't wrap roots in Handle just to dereference immediately.

src/wasm/wasm-module.cc

Index: src/wasm/wasm-module.cc
diff --git a/src/wasm/wasm-module.cc b/src/wasm/wasm-module.cc
index fd83e8aa53fc2894553719b1b2bcdc7d74703309..7bc382600051d64fd7ecb84818174cf2edca4ba6 100644
--- a/src/wasm/wasm-module.cc
+++ b/src/wasm/wasm-module.cc
@@ -943,7 +943,8 @@ class WasmInstanceBuilder {
         JS_OBJECT_TYPE,
         JSObject::kHeaderSize + kWasmInstanceInternalFieldCount * kPointerSize);
     Handle<JSObject> instance = factory->NewJSObjectFromMap(map, TENURED);
-    instance->SetInternalField(kWasmMemObject, *factory->undefined_value());
+    instance->SetInternalField(kWasmMemObject,
+                               isolate_->heap()->undefined_value());
 
     //--------------------------------------------------------------------------
     // Set up the globals for the new instance.
@@ -962,7 +963,7 @@ class WasmInstanceBuilder {
       Address old_address = owner.is_null()
                                 ? nullptr
                                 : GetGlobalStartAddressFromCodeTemplate(
-                                      *factory->undefined_value(),
+                                      isolate_->heap()->undefined_value(),
                                       JSObject::cast(*owner.ToHandleChecked()));
       RelocateGlobals(code_table, old_address,
                       static_cast<Address>(global_buffer->backing_store()));