Codechange: use default dtor instead of empty (#10826)

src/network/core/core.h

@@ -48,7 +48,7 @@ public:
 	NetworkSocketHandler() { this->has_quit = false; }
 
 	/** Close the socket when destructing the socket handler */
-	virtual ~NetworkSocketHandler() {}
+	virtual ~NetworkSocketHandler() = default;
 
 	/**
 	 * Mark the connection as closed.

src/network/core/http.h

@@ -42,7 +42,7 @@ struct HTTPCallback {
 	virtual bool IsCancelled() const = 0;
 
 	/** Silentium */
-	virtual ~HTTPCallback() {}
+	virtual ~HTTPCallback() = default;
 };
 
 /** Base socket handler for HTTP traffic. */

src/network/core/tcp_game.h

@@ -518,7 +518,7 @@ public:
 	 * @param status The reason the connection got closed.
 	 */
 	virtual NetworkRecvStatus CloseConnection(NetworkRecvStatus status) = 0;
-	virtual ~NetworkGameSocketHandler() {}
+	virtual ~NetworkGameSocketHandler() = default;
 
 	/**
 	 * Sets the client info for this socket handler.