Clean up compiler dispatcher job a bit

test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc

Index: test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
diff --git a/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc b/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
index 6c5f24e1c12a008bfadca8d2b1c91d2bdcc84a19..5b8ec478a03d5f4f8a1543f9d1aeac71f8c07ad7 100644
--- a/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
+++ b/test/unittests/compiler-dispatcher/compiler-dispatcher-job-unittest.cc
@@ -21,9 +21,10 @@ class ScriptResource : public v8::String::ExternalOneByteStringResource {
  public:
   ScriptResource(const char* data, size_t length)
       : data_(data), length_(length) {}
+  ~ScriptResource() override = default;
 
-  const char* data() const { return data_; }
-  size_t length() const { return length_; }
+  const char* data() const override { return data_; }
+  size_t length() const override { return length_; }
 
  private:
   const char* data_;