handle missing element by not generating a hyperlink

ERROR    2012-03-24 18:13:38,681 plusfeed.py:375] coercing to Unicode: need string or buffer, NoneType found
Traceback (most recent call last):
  File "/dev/github.com/dabble/plusfeed/plusfeed.py", line 309, in doFeed
    desc = desc + ' <br/><br/><a href="' + post[66][0][1] + '">' + post[66][0][3] + '</a>'
TypeError: coercing to Unicode: need string or buffer, NoneType found
INFO     2012-03-24 18:13:38,695 dev_appserver.py:4247] "GET /114474252347218597235 HTTP/1.0" 500 -

plusfeed.py

@@ -305,7 +305,7 @@ def doFeed(self, p):
 
 					if post[66]:
 
-						if post[66][0][1]:						
+						if post[66][0][3]:						
 							desc = desc + ' <br/><br/><a href="' + post[66][0][1] + '">' + post[66][0][3] + '</a>'
 
 						if post[66][0][6]: