Fix a error the telnet driver read method. Don't return if only protocol stuff is read

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4352 42af7a65-404d-4744-a932-0658087f49c3

lib/stdio/lib_fgets.c

 /****************************************************************************
  * lib/stdio/lib_fgets.c
  *
- *   Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *   Copyright (C) 2007-2008, 2011-2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions