src: add missing virtual destructors

src/inspector/worker_inspector.h

@@ -21,6 +21,7 @@ class WorkerDelegate {
                              const std::string& url,
                              bool waiting,
                              std::shared_ptr<MainThreadHandle> worker) = 0;
+  virtual ~WorkerDelegate() {}
 };
 
 class WorkerManagerEventHandle {

src/node_crypto.cc

@@ -4839,6 +4839,7 @@ class KeyPairGenerationConfig {
   virtual bool Configure(const EVPKeyCtxPointer& ctx) {
     return true;
   }
+  virtual ~KeyPairGenerationConfig() {}
 };
 
 class RSAKeyPairGenerationConfig : public KeyPairGenerationConfig {

src/node_options.h

@@ -24,6 +24,7 @@ struct HostPort {
 class Options {
  public:
   virtual void CheckOptions(std::vector<std::string>* errors) {}
+  virtual ~Options() {}
 };
 
 // These options are currently essentially per-Environment, but it can be nice