Address review comments and fix code compilation

src/input_common/main.cpp

@@ -175,9 +175,11 @@ const GCButtonFactory* InputSubsystem::GetGCButtons() const {
     return impl->gcbuttons.get();
 }
 
-void ReloadInputDevices() {
-    if (udp)
-        udp->ReloadUDPClient();
+void InputSubsystem::ReloadInputDevices() {
+    if (!impl->udp) {
+        return;
+    }
+    impl->udp->ReloadUDPClient();
 }
 
 std::vector<std::unique_ptr<Polling::DevicePoller>> InputSubsystem::GetPollers(

src/input_common/main.h

@@ -118,6 +118,8 @@ public:
     /// Retrieves the underlying GameCube button handler.
     [[nodiscard]] const GCButtonFactory* GetGCButtons() const;
 
+    void ReloadInputDevices();
+
     /// Get all DevicePoller from all backends for a specific device type
     [[nodiscard]] std::vector<std::unique_ptr<Polling::DevicePoller>> GetPollers(
         Polling::DeviceType type) const;

src/input_common/touch_from_button.cpp

@@ -30,14 +30,15 @@ public:
                                 static_cast<int>(Layout::ScreenUndocked::Width);
                 const float y = static_cast<float>(std::get<2>(m)) /
                                 static_cast<int>(Layout::ScreenUndocked::Height);
-                return std::make_tuple(x, y, true);
+                return {x, y, true};
             }
         }
-        return std::make_tuple(0.0f, 0.0f, false);
+        return {};
     }
 
 private:
-    std::vector<std::tuple<std::unique_ptr<Input::ButtonDevice>, int, int>> map; // button, x, y
+    // A vector of the mapped button, its x and its y-coordinate
+    std::vector<std::tuple<std::unique_ptr<Input::ButtonDevice>, int, int>> map;
 };
 
 std::unique_ptr<Input::TouchDevice> TouchFromButtonFactory::Create(