Warning fixes for OS X.

examples/fullscreen.rs

@@ -40,14 +40,14 @@ fn main() {
         .build()
         .unwrap();
 
-    unsafe { window.make_current() };
+    let _ = unsafe { window.make_current() };
 
     
     let context = support::load(&window);
 
     for event in window.wait_events() {
         context.draw_frame((0.0, 1.0, 0.0, 1.0));
-        window.swap_buffers();
+        let _ = window.swap_buffers();
 
         println!("{:?}", event);
 

examples/grabbing.rs

@@ -18,7 +18,7 @@ fn main() { println!("This example requires glutin to be compiled with the `wind
 fn main() {
     let window = glutin::WindowBuilder::new().build().unwrap();
     window.set_title("glutin - Cursor grabbing test");
-    unsafe { window.make_current() };
+    let _ = unsafe { window.make_current() };
 
     let context = support::load(&window);
     let mut grabbed = false;
@@ -45,7 +45,7 @@ fn main() {
         }
 
         context.draw_frame((0.0, 1.0, 0.0, 1.0));
-        window.swap_buffers();
+        let _ = window.swap_buffers();
     }
 }
 

examples/multiwindow.rs

@@ -39,13 +39,13 @@ fn main() {
 
 #[cfg(feature = "window")]
 fn run(window: glutin::Window, color: (f32, f32, f32, f32)) {
-    unsafe { window.make_current() };
+    let _ = unsafe { window.make_current() };
 
     let context = support::load(&window);
 
     for event in window.wait_events() {
         context.draw_frame(color);
-        window.swap_buffers();
+        let _ = window.swap_buffers();
 
         match event {
             glutin::Event::Closed => break,

examples/support/mod.rs

@@ -69,8 +69,6 @@ pub fn load(window: &glutin::Window) -> Context {
 
 impl Context {
     pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
-        use std::mem;
-
         unsafe {
             self.gl.ClearColor(color.0, color.1, color.2, color.3);
             self.gl.Clear(gl::COLOR_BUFFER_BIT);

examples/transparent.rs

@@ -24,7 +24,7 @@ fn main() {
                                                  .build().unwrap();
     window.set_title("A fantastic window!");
     window.set_window_resize_callback(Some(resize_callback as fn(u32, u32)));
-    unsafe { window.make_current() };
+    let _ = unsafe { window.make_current() };
 
     println!("Pixel format of the window: {:?}", window.get_pixel_format());
 
@@ -32,7 +32,7 @@ fn main() {
 
     for event in window.wait_events() {
         context.draw_frame((0.0, 0.0, 0.0, 0.0));
-        window.swap_buffers();
+        let _ = window.swap_buffers();
 
         println!("{:?}", event);
 

examples/window.rs

@@ -22,7 +22,7 @@ fn main() {
     let mut window = glutin::WindowBuilder::new().build().unwrap();
     window.set_title("A fantastic window!");
     window.set_window_resize_callback(Some(resize_callback as fn(u32, u32)));
-    unsafe { window.make_current() };
+    let _ = unsafe { window.make_current() };
 
     println!("Pixel format of the window: {:?}", window.get_pixel_format());
 
@@ -30,7 +30,7 @@ fn main() {
 
     for event in window.wait_events() {
         context.draw_frame((0.0, 1.0, 0.0, 1.0));
-        window.swap_buffers();
+        let _ = window.swap_buffers();
 
         println!("{:?}", event);