[horde] Logout error

[Charles E. Robinson III]

Here's the error

Notice: Constant sid already defined in /htdocs/horde/lib/Prefs.php on line
91

Warning: Cannot send session cache limiter - headers already sent (output
started at /htdocs/horde/lib/Prefs.php:91) in /htdocs/horde/lib/Prefs.php on
line 91


line 91 >>  if (!session_register('prefs_cache')) {

Someone posted that removing "!" from the line, would fix the error
But I wanted to be sure this was the best way to fix it.

Thanks.

CR