plugin XEP-0198: reset req_timer on session.reset():

req_timer may not have been called when session.reset() is called (e.g. on resuming failed after computer has been suspended), so reset() must cancel it and set its value to None.

sat/plugins/plugin_xep_0198.py

@@ -116,6 +116,12 @@ class ProfileSessionData(object):
         self.session_id = self.location = None
         self.ack_requested = False
         self.last_ack_r = 0
+        if self.req_timer is not None:
+            if self.req_timer.active():
+                log.error(u"req_timer has been called/cancelled but not reset")
+            else:
+                self.req_timer.cancel()
+            self.req_timer = None
 
 
 class XEP_0198(object):