fix lint

Author: tinayuangao

src/lib/chips/chip-list.spec.ts

@@ -246,7 +246,7 @@ describe('MdChipList', () => {
           tick();
 
           expect(chipListInstance._tabIndex).toBe(4, 'Expected tabIndex to be reset back to 4');
-        }))
+        }));
       });
     });
   });

src/lib/chips/chip-list.ts

@@ -78,7 +78,7 @@ export class MdChipList implements AfterContentInit, OnDestroy {
 
   /** User defined tab index.
    * When it is not null, use user defined tab index. Otherwise use _tabIndex */
-  _userTabIndex : number | null = null;
+  _userTabIndex: number | null = null;
 
   /** The FocusKeyManager which handles focus. */
   _keyManager: FocusKeyManager;