Fix instances of using undefined variables.

sleekxmpp/plugins/xep_0030/disco.py

@@ -754,7 +754,7 @@ class xep_0030(base_plugin):
         """
         result = info
         if isinstance(info, Iq):
-            info = iq['disco_info']
+            info = info['disco_info']
         if not info['node']:
             if not info['identities']:
                 if self.xmpp.is_component:

sleekxmpp/plugins/xep_0030/static.py

@@ -11,7 +11,7 @@ import threading
 
 import sleekxmpp
 from sleekxmpp import Iq
-from sleekxmpp.exceptions import XMPPError
+from sleekxmpp.exceptions import XMPPError, IqError, IqTimeout
 from sleekxmpp.plugins.base import base_plugin
 from sleekxmpp.xmlstream.handler import Callback
 from sleekxmpp.xmlstream.matcher import StanzaPath