nacl_io: accept now allows addr and len to be NULL

native_client_sdk/src/libraries/nacl_io/kernel_proxy.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "nacl_io/kernel_proxy.h"
 
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ skipping 1344 matching lines @@
         }
       }
     }
   }
 
   return event_cnt;
 }
 
 // Socket Functions
 int KernelProxy::accept(int fd, struct sockaddr* addr, socklen_t* len) {
-  if (NULL == addr || NULL == len) {
-    errno = EFAULT;
-    return -1;
-  }
-
   ScopedKernelHandle handle;
   Error error = AcquireHandle(fd, &handle);
   if (error) {
     errno = error;
     return -1;
   }
 
   PP_Resource new_sock = 0;
   error = handle->Accept(&new_sock, addr, len);
   if (error != 0) {
@@ skipping 438 matching lines @@
     errno = ENOTSOCK;
     return -1;
   }
 
   return 0;
 }
 
 #endif  // PROVIDES_SOCKET_API
 
 }  // namespace_nacl_io