Use C++11's in-line member initializers instead of default constructors with initializer lists, for some structs.

--HG--
branch : minor

src/modules/window/sdl/Window.cpp

@@ -57,14 +57,6 @@ Window::~Window()
 	SDL_QuitSubSystem(SDL_INIT_VIDEO);
 }
 
-Window::_currentMode::_currentMode()
-	: width(800)
-	, height(600)
-	, settings()
-	, icon(0)
-{
-}
-
 bool Window::setWindow(int width, int height, WindowSettings *settings)
 {
 	WindowSettings f;

src/modules/window/sdl/Window.h

@@ -111,10 +111,8 @@ private:
 
 	struct _currentMode
 	{
-		_currentMode();
-
-		int width;
-		int height;
+		int width  = 800;
+		int height = 600;
 		WindowSettings settings;
 		Object::StrongRef<love::image::ImageData> icon;