libcamera: base: extensible: Pass private pointer as unique_ptr<>

The Extensible constructor takes a pointer to a Private instance, whose
lifetime it then manages. Make this explicit in the API by passing the
pointer as a std::unique_ptr<Private>.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/libcamera/framebuffer.cpp

@@ -181,7 +181,8 @@ FrameBuffer::Private::Private()
  * \param[in] cookie Cookie
  */
 FrameBuffer::FrameBuffer(const std::vector<Plane> &planes, unsigned int cookie)
-	: Extensible(new Private()), planes_(planes), cookie_(cookie)
+	: Extensible(std::make_unique<Private>()), planes_(planes),
+	  cookie_(cookie)
 {
 }