fixup! fix($compile): throw error in $onChanges immediately

Author: Narretz

src/ng/compile.js

@@ -1557,7 +1557,6 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
         }
         // We must run this hook in an apply since the $$postDigest runs outside apply
         $rootScope.$apply(function() {
-          var errors = [];
           for (var i = 0, ii = onChangesQueue.length; i < ii; ++i) {
             try {
               onChangesQueue[i]();