[SM-DEVEL] Warnings with today's SVN trunk re: Deliver_IMAP.class.php sending simple test message

[Robert H. <rh...@we...>]

I'm trying to work my way from a packaged version of 1.5.2 SVN 20160723 
to get an upgraded packaged version of squirrelmail 1.5.2 SVN 20210328 
that will work on Ubuntu 20.04.

I'm getting close but have ran into some new warnings when sending a 
simple test message to myself I get the following at the bottom of the page:

SquirrelMail notice messages
Category:     PHP, Delayed
Message:     Declaration of Deliver_IMAP::send_mail($message, $header, 
$boundary, $stream, &$raw_length, $folder = NULL) should be compatible 
with Deliver::send_mail($message, $header, $boundary, $stream = false, 
&$raw_length = 0, $extra = NULL)
FILE: /usr/share/squirrelmail/class/deliver/Deliver_IMAP.class.php
LINE:     0

I'm not 100% clear on what it is complaining about. The warning happens 
with several versions of php. I've checked php7.0 and php7.2 so far.

Would someone familiar with the code be able to commit fixes to Trunk 
which would make the warnings go away?

This diff below showed what changed but I didn't send a mountain of 
output in a 1st message to the mailing list. I'm happy to send the 
output if someone wants it.

 > diff -urN squirrelmail-1.5.2~svn20160723/class/deliver/ 
squirrelmail-1.5.2~svn20210328/class/deliver/

Thanks,
Rob