[console] Fix add host in connection manager

The input is being passed as `str` instead of `int`, so added a
conversion only if the string is indeed a decimal number.
In addition, closing the add host popup after adding it.

Closes: https://dev.deluge-torrent.org/ticket/3538

deluge/ui/console/modes/connectionmanager.py

@@ -127,12 +127,14 @@ class ConnectionManager(BaseMode, PopupsHandler):
 
     def add_host(self, hostname, port, username, password):
         log.info('Adding host: %s', hostname)
+        if port.isdecimal():
+            port = int(port)
         try:
             self.hostlist.add_host(hostname, port, username, password)
         except ValueError as ex:
             self.report_message(_('Error adding host'), f'{hostname}: {ex}')
         else:
-            self.update_select_host_popup()
+            self.pop_popup()
 
     def delete_host(self, host_id):
         log.info('Deleting host: %s', host_id)