Remove trivial cast

src/main.rs

@@ -2,6 +2,8 @@
 #![feature(convert, fs_mode)]
 #![feature(slice_splits, vec_resize)]
 
+#![warn(trivial_casts, trivial_numeric_casts)]
+
 extern crate ansi_term;
 extern crate datetime;
 extern crate getopts;

src/term.rs

@@ -25,7 +25,7 @@ mod c {
 
     pub unsafe fn dimensions() -> Winsize {
         let mut window: Winsize = zeroed();
-        ioctl(STDOUT_FILENO, TIOCGWINSZ, &mut window as *mut Winsize);
+        ioctl(STDOUT_FILENO, TIOCGWINSZ, &mut window);
         window
     }
 }