libcamera: Declare empty virtual destructors as defaulted

The base class of polymorphic classes is required to declare a
destructor. Several of these are empty, and can thus be declared as
defaulted.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <email@uajain.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/ipa/raspberrypi/controller/algorithm.hpp

@@ -30,7 +30,7 @@ public:
 		: controller_(controller), paused_(false)
 	{
 	}
-	virtual ~Algorithm() {}
+	virtual ~Algorithm() = default;
 	virtual char const *Name() const = 0;
 	virtual bool IsPaused() const { return paused_; }
 	virtual void Pause() { paused_ = true; }