uint64 has non-trivial destructor on 32-bit windows. This cause arena

allocator to allocate memory twice for uint64.

src/google/protobuf/arena_unittest.cc

@@ -1232,11 +1232,11 @@ TEST(ArenaTest, ArenaHooksSanity) {
     EXPECT_EQ(1, ArenaHooksTestUtil::num_init);
     EXPECT_EQ(0, ArenaHooksTestUtil::num_allocations);
     ::google::protobuf::Arena::Create<uint64>(&arena);
-#ifdef _WIN32
-    EXPECT_EQ(2, ArenaHooksTestUtil::num_allocations);
-#else
-    EXPECT_EQ(1, ArenaHooksTestUtil::num_allocations);
-#endif
+    if (::google::protobuf::internal::has_trivial_destructor<uint64>::value) {
+      EXPECT_EQ(1, ArenaHooksTestUtil::num_allocations);
+    } else {
+      EXPECT_EQ(2, ArenaHooksTestUtil::num_allocations);
+    }
     arena.Reset();
     arena.Reset();
     EXPECT_EQ(2, ArenaHooksTestUtil::num_reset);