Fix assignment error & remove whitespace

* Fix assignment typo where const noLength wasn't being assigned.
* Remove whitespace created by Travis CI.

snippets/checkProp.md

@@ -12,36 +12,6 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
 ```
 
 ```js
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
 const lengthIs4 = checkProp(l => l === 4, 'length');
 lengthIs4([]); // false
 lengthIs4([1,2,3,4]); // true
@@ -55,8 +25,8 @@ validUserSession(session); // false
 session.user.active = true;
 validUserSession(session); // true
 
-const noLength(l => l === undefined, 'length');
+const noLength = checkProp(l => l === undefined, 'length');
 noLength([]); // false
 noLength({}); // true
 noLength(new Set()); // true
-```
+```