Fix parser error

pkg/analyzer/lib/src/generated/parser.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.src.generated.parser;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 5706 matching lines @@
     }
     int depth = 1;
     Token previous = startToken;
     Token next = startToken.next;
     while (next != previous) {
       if (_tokenMatches(next, TokenType.LT)) {
         depth++;
       } else if (_tokenMatches(next, TokenType.GT)) {
         depth--;
         if (depth == 0) {
-          return next;
+          return next.next;
         }
       }
       previous = next;
       next = next.next;
     }
     return null;
   }
 
   /**
    * Advance to the next token in the token stream.
@@ skipping 2824 matching lines @@
     }
     if (modifiers.finalKeyword != null) {
       _reportErrorForToken(
           ParserErrorCode.FINAL_TYPEDEF, modifiers.finalKeyword);
     }
     if (modifiers.varKeyword != null) {
       _reportErrorForToken(ParserErrorCode.VAR_TYPEDEF, modifiers.varKeyword);
     }
   }
 }