WebUI generates AttributeError when reconnected to daemon

[Cas]

To reproduce:

• Open browser with webui and select a torrent.
• Kill deluged
• Start deluged
• The webui will generate the following error in logs:

[ERROR   ] 15:33:47 json_api:229 'NoneType' object has no attribute 'call'
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/deluge/ui/web/json_api.py", line 220, in _handle_request
    result = self._exec_local(method, params, request)
  File "/usr/lib/python2.7/dist-packages/deluge/ui/web/json_api.py", line 187, in _exec_local
    return meth(*params)
  File "/usr/lib/python2.7/dist-packages/deluge/ui/web/json_api.py", line 618, in get_torrent_status
    return component.get("SessionProxy").get_torrent_status(torrent_id, keys)
  File "/usr/lib/python2.7/dist-packages/deluge/ui/sessionproxy.py", line 148, in get_torrent_status
    d = client.core.get_torrent_status(torrent_id, keys, True)
  File "/usr/lib/python2.7/dist-packages/deluge/ui/client.py", line 508, in __call__
    return self.daemon.call(self.base, *args, **kwargs)
AttributeError: 'NoneType' object has no attribute 'call'

The is due to a delayed get_torrent_status call to not yet created daemon in client.py.

It is a trivial issue and simply generates unnecessary log messages.

[Cas]

Milestone renamed

[danger89]

Selecting a torrent also give me this fatal error...

13:16:05 [ERROR   ][deluge.ui.web.json_api     :168 ] Error calling method `web.get_torrent_status`: 'NoneType' object has no attribute 'call'
13:16:05 [ERROR   ][deluge.ui.web.json_api     :1343] 'NoneType' object has no attribute 'call'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/deluge/ui/web/json_api.py", line 160, in _handle_request
    result = self._exec_local(method, params, request)
  File "/usr/lib/python3/dist-packages/deluge/ui/web/json_api.py", line 122, in _exec_local
    return meth(*params)
  File "/usr/lib/python3/dist-packages/deluge/ui/web/json_api.py", line 640, in get_torrent_status
    d = component.get('SessionProxy').get_torrent_status(torrent_id, keys)
  File "/usr/lib/python3/dist-packages/deluge/ui/sessionproxy.py", line 159, in get_torrent_status
    d = client.core.get_torrent_status(torrent_id, keys, True)
  File "/usr/lib/python3/dist-packages/deluge/ui/client.py", line 551, in __call__
    return self.daemon.call(self.base, *args, **kwargs)
AttributeError: 'NoneType' object has no attribute 'call'

Help again!?