win - x io errors really just have to exit, so call the iorr cb + exit

from xlib man page:

The XSetIOErrorHandler sets the fatal I/O error  handler. Xlib  calls
the  program's  supplied error handler if any sort of system call error
occurs (for example, the connection to the server was lost). This  is
assumed  to be a fatal condition, and the called routine should not re‐
turn.  If the I/O error handler does return, the client process exits.

@fix

src/lib/elementary/efl_ui_win.c

@@ -4992,7 +4992,8 @@ _elm_x_io_err(void *data EINA_UNUSED)
 
    EINA_LIST_FOREACH(_elm_win_list, l, obj)
      evas_object_smart_callback_call(obj, "ioerr", NULL);
-   elm_exit();
+   fprintf(stderr, "X I/O Error - fatal. Exiting\n");
+   exit(101);
 }
 #endif