[clang-tidy] Add override to overridden destructors

See
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-override.html
for more on this warning.

Bug: v8:10488
Change-Id: Icfb54d8f4ab0efe0fdf51bd1920511b7505207d0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2223234Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68120}

src/wasm/module-compiler.cc

@@ -1539,7 +1539,7 @@ class AsyncStreamingProcessor final : public StreamingProcessor {
                                    std::shared_ptr<Counters> counters,
                                    AccountingAllocator* allocator);
 
-  ~AsyncStreamingProcessor();
+  ~AsyncStreamingProcessor() override;
 
   bool ProcessModuleHeader(Vector<const uint8_t> bytes,
                            uint32_t offset) override;

src/wasm/wasm-engine.cc

@@ -55,7 +55,7 @@ class LogCodesTask : public Task {
     DCHECK_NOT_NULL(isolate);
   }
 
-  ~LogCodesTask() {
+  ~LogCodesTask() override {
     // If the platform deletes this task before executing it, we also deregister
     // it to avoid use-after-free from still-running background threads.
     if (!cancelled()) DeregisterTask();