fix($compile): review remarks

Author: curlydevil

test/ng/compileSpec.js

@@ -294,7 +294,7 @@ describe('$compile', function() {
       inject(function($compile) {});
     });
 
-    it('should omit special chars before processing attribute directive name', function() {
+    it('should ignore special chars before processing attribute directive name', function() {
       // a regression https://github.com/angular/angular.js/issues/16278
       module(function() {
         directive('t', function(log) {
@@ -308,9 +308,9 @@ describe('$compile', function() {
         });
       });
       inject(function($compile, $rootScope, log) {
-        element = $compile('<div _t></div>')($rootScope);
-        element = $compile('<div -t></div>')($rootScope);
-        element = $compile('<div :t></div>')($rootScope);
+        $compile('<div _t></div>')($rootScope);
+        $compile('<div -t></div>')($rootScope);
+        $compile('<div :t></div>')($rootScope);
         expect(log).toEqual('pre; post; pre; post; pre; post');
       });
     });