Refactor options2.rs: Use if let and while let statements

exercises/12_options/options2.rs

@@ -3,8 +3,6 @@
 // Execute `rustlings hint options2` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
-
 #[cfg(test)]
 mod tests {
     #[test]
@@ -13,9 +11,9 @@ mod tests {
         let optional_target = Some(target);
 
         // TODO: Make this an if let statement whose value is "Some" type
-        word = optional_target {
+        let word = if let Some(target) = optional_target {
             assert_eq!(word, target);
-        }
+        };
     }
 
     #[test]
@@ -32,10 +30,10 @@ mod tests {
         // TODO: make this a while let statement - remember that vector.pop also
         // adds another layer of Option<T>. You can stack `Option<T>`s into
         // while let and if let.
-        integer = optional_integers.pop() {
+        integer = if let Some(cursor) = optional_integers.pop() {
             assert_eq!(integer, cursor);
-            cursor -= 1;
-        }
+            cursor -= 1
+        };
 
         assert_eq!(cursor, 0);
     }