add break return value syntax

src/bin/hello.rs

@@ -11,6 +11,11 @@ fn fair_dice_roll() -> i32 {
 
 fn main() {
 
+    let x = 'named: loop {
+        break 'named 10;
+    };
+    println!("{}", x);
+
     let res = fair_dice_roll();
     println!("{}", res);
 }