propogate player smart-pointer usage

src/frontend/hud.cpp

@@ -645,6 +645,6 @@ void Hud::setPause(bool pause) {
     menu->setVisible(pause);
 }
 
-Player* Hud::getPlayer() const {
-    return frontend->getLevel()->player.get();
+std::shared_ptr<Player> Hud::getPlayer() const {
+    return frontend->getLevel()->player;
 }

src/frontend/hud.h

@@ -118,7 +118,7 @@ public:
 	void remove(HudElement& element);
     void remove(std::shared_ptr<gui::UINode> node);
 
-    Player* getPlayer() const;
+    std::shared_ptr<Player> getPlayer() const;
 };
 
 #endif /* SRC_HUD_H_ */