changes redundant .unwrap_or_else(panic!()) to .unwrap()

src/strerror.rs

@@ -15,12 +15,12 @@ extern "C" { fn strerror(errnum: c_int) -> *mut c_char; }
 /* wrapper function for use in Rust */
 pub fn raw_message(err: std::io::Error) -> String {
 	/* Get the raw OS error. If it’s None, what the hell is going on‽ */
-	let error = err.raw_os_error().unwrap_or_else(|| { panic!() }) as c_int;
+	let errno = err.raw_os_error().unwrap() as c_int;
 
 	/* Get a CStr from the error message so that it’s referenced and then
 	 * convert it to an owned value. If the string is not valid UTF-8, return
 	 * that error instead. */
-	match unsafe { CStr::from_ptr(strerror(error)) }.to_str() {
+	match unsafe { CStr::from_ptr(strerror(errno)) }.to_str() {
 		Ok(s) => s.to_owned(), // yay!! :D
 		Err(e) => e.to_string(), // awww :(
 	}

src/test.rs

@@ -0,0 +1,10 @@
+extern crate strerror;
+
+use strerror::raw_message;
+
+fn main() {
+	stdout.write_all(b"meow\n").unwrap_or_else(|e| {
+		eprintln!("{}", raw_message(e));
+		std::process::exit(1);
+	});
+}