Fix lastTime in the future after correcting system time (not updating cache)

Author: Patrick Vos

sickbeard/tvcache.py

@@ -166,6 +166,9 @@ def _getLastUpdate(self):
 
         if sqlResults:
             lastTime = int(sqlResults[0]["time"])
+            if lastTime > int(time.mktime(datetime.datetime.today().timetuple())):
+                lastTime = 0
+
         else:
             lastTime = 0