Fix references to duplicated sys types

Cargo.toml

@@ -4,7 +4,7 @@ name    = "sdl2"
 description = "SDL2 bindings for Rust"
 repository = "https://github.com/AngryLawyer/rust-sdl2"
 documentation = "http://angrylawyer.github.io/rust-sdl2/sdl2/"
-version = "0.23.0"
+version = "0.23.1"
 license = "MIT"
 authors = [ "Tony Aldridge <tony@angry-lawyer.com>" ]
 keywords = ["SDL", "windowing", "graphics"]

src/sdl2/mouse.rs

@@ -210,7 +210,7 @@ impl MouseUtil {
     }
 
     pub fn is_cursor_showing(&self) -> bool {
-        unsafe { ll::SDL_ShowCursor(ll::SDL_QUERY) == 1 }
+        unsafe { ll::SDL_ShowCursor(::sys::SDL_QUERY) == 1 }
     }
 
     pub fn show_cursor(&self, show: bool) {

src/sdl2/surface.rs

@@ -453,7 +453,7 @@ impl SurfaceRef {
     }
 
     pub fn blend_mode(&self) -> BlendMode {
-        let mut mode: ll::SDL_BlendMode = 0;
+        let mut mode: ::sys::SDL_BlendMode = 0;
         let result = unsafe {
             ll::SDL_GetSurfaceBlendMode(self.raw(), &mut mode)
         };