Fix some VS 2015 warnings

util/util.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 241 matching lines @@
         ['OS=="win"', {
           'link_settings': {
             'libraries': [
               '-ladvapi32.lib',
               '-lrpcrt4.lib',
               '-lwinhttp.lib',
             ],
           },
           'msvs_disabled_warnings': [
             4201,  # nonstandard extension used : nameless struct/union.
+            4577,  # 'noexcept' used with no exception handling mode specified
           ],
           'conditions': [
             ['target_arch=="ia32"', {
               'msvs_settings': {
                 'MASM': {
                   'UseSafeExceptionHandlers': 'true',
                 },
               },
             }],
           ],
         }],
       ],
     },
   ],
 }