Description:
------------
It seems that stream function can cause memory leaks so easily. We hope the stream developer  fix it as soon as possible.

Here is another one: it leaks when you add ./configure --enable-debug

Reproduce code:
---------------
<?php
class upper_filter extends php_user_filter{
      function filter($in, $out, &$consumed, $closing) {
      while($bucket=stream_bucket_make_writeable($in)){
$fp=fopen("2.txt", "w");
$bucket=stream_bucket_new($fp, "Abc\n");
     $bucket->data = strtoupper($bucket->data);
         $consumed += $bucket->datalen;
   stream_bucket_append($out, $bucket);
         }
return PSFS_PASS_ON;
  }
}
stream_filter_register("upper", "upper_filter");
$fp=fopen("2.txt", "w");
stream_filter_append($fp,  "upper");
fread($fp, 1024);
fwrite($fp, "Thank you\n");
fclose($fp);
readfile("2.txt");
unlink("2.txt");
?>

Actual result:
--------------
[sqchen@localhost sqchen]$ $php tt.php
ABC

~

[Tue Mar 28 16:54:43 2006]  Script:  'tt.php'
/home/sqchen/sqchen/php-5.1.2/main/streams/filter.c(129) :  Freeing 0x083EE864 (10 bytes), script=tt.php
[Tue Mar 28 16:54:43 2006]  Script:  'tt.php'
/home/sqchen/sqchen/php-5.1.2/main/streams/filter.c(126) :  Freeing 0x083EE814 (32 bytes), script=tt.php
=== Total 2 memory leaks detected ===