sdl/render: Fix naked return value assignments in `RenderWindowToLogical` and `RenderLogicalToWindow` (#508)
sdl/render: Fix naked return value assignments in `RenderWindowToLogical` and `RenderLogicalToWindow` (#508)

* sdl/render: fix the return assignments in `RenderWindowToLogical`

* sdl/render: fix the return assignments in `RenderLogicalToWindow`
veandco/go-sdl2,veandco/go-sdl2