Fix for async iteration when the body contains a break statement (closes

 #40)

helpers.js

@@ -233,7 +233,7 @@ export function _forAwaitOf(target, body, check) {
 		iterator.next().then(_resumeAfterNext).then(void 0, _reject);
 		return pact;
 		function _resumeAfterBody(result) {
-			if (check && !check()) {
+			if (check && check()) {
 				return _settle(pact, 1, iterator.return ? iterator.return().then(function() { return result; }) : result);
 			}
 			iterator.next().then(_resumeAfterNext).then(void 0, _reject);

tests/for await of in body with break/case-async-iterator.js

@@ -0,0 +1,11 @@
+expect((await f({
+    [Symbol.asyncIterator]() {
+        const arr = [1, 10, 4];
+        let i = 0;
+        return {
+            async next() {
+                return {value: arr[i], done: ++i === arr.length};
+            }
+        };
+    }
+}))).toBe(11);