Prevent monkey patching

This doesn't affect globals (describe, it, expect, etc). Those belong to
the user and Jasmine doesn't depend on them.

spec/html/QueryStringSpec.js

@@ -77,4 +77,12 @@ describe('QueryString', function() {
       expect(queryString.getParam('baz')).toBeFalsy();
     });
   });
+
+  isNonMonkeyPatchableClass(jasmineUnderTest.QueryString, function() {
+    return new jasmineUnderTest.QueryString({
+      getWindowLocation: function() {
+        return { search: '' };
+      }
+    });
+  });
 });