Optimize parameter passing to avoid unnecessary copying

src/logic/scripting/lua/libcore.cpp

@@ -103,7 +103,7 @@ static int l_reconfig_packs(lua_State* L) {
 static int l_get_setting(lua_State* L) {
     auto name = lua_tostring(L, 1);
     const auto value = scripting::engine->getSettingsHandler().getValue(name);
-    scripting::state->pushvalue(std::move(value));
+    scripting::state->pushvalue(value);
     return 1;
 }
 

src/logic/scripting/lua/libgui.cpp

@@ -494,7 +494,7 @@ static void p_set_inventory(UINode* node, int idx) {
         }
     }
 }
-static void p_set_focused(std::shared_ptr<UINode> node, int idx) {
+static void p_set_focused(const std::shared_ptr<UINode> &node, int idx) {
     if (state->toboolean(idx) && !node->isFocused()) {
         scripting::engine->getGUI()->setFocus(node);
     } else if (node->isFocused()){