[ptr-compr] Fix macro assembler test for Windows bot failure

R=ishell@chromium.org

Bug: v8:7703
Change-Id: Iba0ad7d6c6e9c772fc9d9bc081b0c2bf31e23565
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613249Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61542}

test/cctest/test-macro-assembler-x64.cc

@@ -454,9 +454,9 @@ TEST(EmbeddedObj) {
   StdoutStream os;
   code->Print(os);
 #endif
-  typedef Object(myF0)();
+  typedef Address(myF0)();
   auto f = GeneratedCode<myF0>::FromAddress(isolate, code->entry());
-  Object result = f.Call();
+  Object result = Object(f.Call());
   CHECK_EQ(old_array->ptr(), result.ptr());
 
   // Collect garbage to ensure reloc info can be walked by the heap.