core::iter::repeat_with: fix tests some more

Author: Centril

src/libcore/tests/iter.rs

@@ -1565,11 +1565,11 @@ fn test_repeat_with_rev() {
     let mut curr = 1;
     let mut pow2 = repeat_with(|| { let tmp = curr; curr *= 2; tmp })
                     .rev().take(4);
-    assert_eq!(it.next(), Some(1));
-    assert_eq!(it.next(), Some(2));
-    assert_eq!(it.next(), Some(4));
-    assert_eq!(it.next(), Some(8));
-    assert_eq!(it.next(), None);
+    assert_eq!(pow2.next(), Some(1));
+    assert_eq!(pow2.next(), Some(2));
+    assert_eq!(pow2.next(), Some(4));
+    assert_eq!(pow2.next(), Some(8));
+    assert_eq!(pow2.next(), None);
 }
 
 #[test]