Description:
------------
For a stream in blocking or non blocking mode, stream_get_meta_data does not return the correct number of unread bytes until it's been 'freshened' by a fread or similar.

For example, the test program.

The unread bytes will be 0, but if you insert a fgets($fp) above the stream_get_meta_data line, it will return the correct number of bytes. It also does this if blocking is set to false.

If you need any more information about my setup, feel free to ask, it's really not that odd or special.

Thanks!

Reproduce code:
---------------
<?PHP
$fp=fsockopen("irc.freenode.net",6667);
stream_set_blocking($fp,TRUE);
fwrite($fp,"NICK BOOT\nUSER BOOT 0 * :BOOT\n\n");
$read=array($fp);
while(1) {
if(false===($num_changed_streams=stream_select($read,$write=NULL,$except=NULL,1)))
  break;
 else  {
  $data=stream_get_meta_data($fp);
  print_r($data);
  while($data['unread_bytes']>0)   {
   echo fgets($fp);
   $data=stream_get_meta_data($fp);
  }
 }
}
fclose($fp);
?>

Expected result:
----------------
Something similar to this

kormoc@kormoc ~ $ php streamtest.php
NOTICE AUTH :*** Looking up your hostname...
Array
(
    [stream_type] => tcp_socket/ssl
    [mode] => r+
    [unread_bytes] => 0
    [seekable] =>
    [timed_out] =>
    [blocked] => 1
    [eof] =>
)
NOTICE AUTH :*** Found your hostname, welcome back
Array
(
    [stream_type] => tcp_socket/ssl
    [mode] => r+
    [unread_bytes] => 77
    [seekable] =>
    [timed_out] =>
    [blocked] => 1
    [eof] =>
)
NOTICE AUTH :*** Checking ident
NOTICE AUTH :*** No identd (auth) response
:sendak.freenode.net 432  BOOT :Erroneous Nickname
Array
(
    [stream_type] => tcp_socket/ssl
    [mode] => r+
    [unread_bytes] => 0
    [seekable] =>
    [timed_out] =>
    [blocked] => 1
    [eof] =>
)

Actual result:
--------------
Array
(
    [stream_type] => tcp_socket/ssl
    [mode] => r+
    [unread_bytes] => 0
    [seekable] =>
    [timed_out] =>
    [blocked] => 1
    [eof] =>
)
(repeating forever)