Fix linting

Adapt scoped keyframes test for Safari 11 still failing on https://bugs.webkit.org/show_bug.cgi?id=166748

Author: dfreedm

test/unit/dir.html

@@ -57,7 +57,7 @@
           static get is() {return 'x-inner-dir';}
         }
         customElements.define(XInnerDir.is, XInnerDir);
-      })
+      });
     </script>
   </dom-module>
 

test/unit/styling-cross-scope-var.html

@@ -790,7 +790,7 @@
   });
 
   test('instances of scoped @keyframes', function(done) {
-    if (navigator.userAgent.match(/Safari\/603/) && ShadyCSS.nativeCss && ShadyCSS.nativeShadow) {
+    if (navigator.userAgent.match(/Safari\/60(3|4)/) && ShadyCSS.nativeCss && ShadyCSS.nativeShadow) {
       // `:nth-of-type` is broken in shadow roots on Safari 10.1
       // https://bugs.webkit.org/show_bug.cgi?id=166748
       this.skip();