bug#40914: 27.0.91; erc send is failing on pretest

[Eli Zaretskii]

> From: andrés ramírez <rrandresf@gmail.com>
> Cc: 40914@debbugs.gnu.org
> Date: Tue, 28 Apr 2020 17:03:06 +0000
> 
>     Eli> So does the patch below fix the problem?
> 
> 
> [...]
> 
> 
> Yes Eli. It has fixed It.

Thanks, pushed to the emacs-27 branch.