Added error handling to cricket score plugin

cricket-score.py

@@ -2,8 +2,7 @@ import prof
 import urllib2
 import json
 
-#_score_url = "http://api.scorescard.com/?type=score&teamone=Australia&teamtwo=England"
-_score_url = None
+_score_url = "http://api.scorescard.com/?type=score&teamone=England&teamtwo=Sri%20Lanka"
 _summary = None
 
 def _cmd_cricket():
@@ -12,7 +11,7 @@ def _cmd_cricket():
     new_summary = None
 
     result_json = _retrieve_scores_json()
-
+    if (result_json):
         if 'ms' in result_json.keys():
             new_summary = result_json['ms']
 
@@ -44,6 +43,7 @@ def _get_scores():
 
     result_json = _retrieve_scores_json()
     
+    if (result_json):
         if 'ms' in result_json.keys():
             new_summary = result_json['ms']
             if new_summary != _summary:
@@ -77,10 +77,16 @@ def _get_scores():
 
 def _retrieve_scores_json():
     req = urllib2.Request(_score_url, None, {'Content-Type': 'application/json'})
+    try:
         f = urllib2.urlopen(req)
+    except:
+        prof.log_info("cricket-score.py: Error getting scores.")
+        return None
+    else:
         response = f.read()
         f.close()
         return json.loads(response)
+
 def prof_init(version, status):
     if _score_url:
         prof.register_timed(_get_scores, 60)