bug#49955: 28.0.50; Emacs got quasi freeze

[martin rudalics]

> This issue was solved by;
>
> Tweak x_connection_closed when I/O error
> * src/xterm.c (x_connection_closed): Don’t dereference dpyinfo
> in the unlikely case where it is null and ioerror is true.
> This pacifies gcc 11.2.1 -Wanalyzer-null-dereference.
>   master
> @eggert
> eggert committed 7 days ago

I suppose this means that Bug#49959 is fixed too.  Do you have any
explanation why and how these bugs are related to Eggert's fix?

Thanks, martin