add `;` to while, to make parsing life easier

tests/w1_2.rs

@@ -61,7 +61,7 @@ fn _if_then_else_and_while() {
         let mut c: i32 = 1;
         while (b < 10) {
             c = c * 2;
-        }
+        }; // added ";" here... to make parsing easier, it is still valid Rust though
         c
     }
 }