Fix not virtual destructor

src/clippy/target.hpp

@@ -20,11 +20,13 @@ namespace clippy::targets {
 class Target {
  public:
   virtual void Execute() = 0;
+  virtual ~Target() = 0;
 };
 
 class EmptyTarget : public Target {
  public:
   void Execute() override {}
+  ~EmptyTarget() override {}
 };
 
 class OpenProjectConfig : public Target {
@@ -32,6 +34,7 @@ class OpenProjectConfig : public Target {
   OpenProjectConfig(Config config) : config_(config) {}
 
   void Execute() override { config_.Edit(); }
+  ~OpenProjectConfig() override {}
 
  private:
   Config config_;
@@ -48,6 +51,7 @@ class CreateProjectConfig : public Target {
     auto config = projects_.GetNewConfig(scripts_path);
     config.Edit();
   }
+  ~CreateProjectConfig() override {}
 
  private:
   ProjectList& projects_;
@@ -85,6 +89,8 @@ class RunShellScript : public Target {
     }
   }
 
+  ~RunShellScript() override {}
+
  private:
   std::vector<std::string> commands_;
 };