Bug 1569443 - Free composition recorder structures when freeing Renderer r=kvark

Differential Revision: https://phabricator.services.mozilla.com/D39752

--HG--
extra : moz-landing-system : lando

gfx/wr/webrender/src/renderer.rs

@@ -5199,6 +5199,10 @@ impl Renderer {
             async_screenshots.deinit(&mut self.device);
         }
 
+        if let Some(async_frame_recorder) = self.async_frame_recorder.take() {
+            async_frame_recorder.deinit(&mut self.device);
+        }
+
         #[cfg(feature = "capture")]
         self.device.delete_fbo(self.read_fbo);
         #[cfg(feature = "replay")]