tidy-fix automàtic (sense naming)

source/game/scenes/credits_scene.hpp

@@ -28,7 +28,7 @@ namespace scenes {
 
         void onEnter() override;
         void tick(int delta_ms) override;
-        bool done() const override { return phase_ == Phase::Done; }
+        [[nodiscard]] auto done() const -> bool override { return phase_ == Phase::Done; }
 
        private:
         enum class Phase { Rolling,
@@ -36,7 +36,7 @@ namespace scenes {
             Done };
 
         void render();
-        void writeTrickIni();
+        static void writeTrickIni();
 
         SurfaceHandle vaddr2_;  // gfx/final.gif (sprites i coches)
         SurfaceHandle vaddr3_;  // gfx/finals.gif (fons / parallax)