all: Make pylint happier.

caucase/storage.py

@@ -149,6 +149,7 @@ class SQLite3Storage(local):
     if result_list:
       result, = result_list
       return result
+    return None
 
   def getConfigOnce(self, name, default):
     """
@@ -474,6 +475,7 @@ class SQLite3Storage(local):
       )
       if row is not None:
         return row['crl'].encode('ascii')
+    return None
 
   def getNextCertificateRevocationListNumber(self):
     """

caucase/test.py

@@ -73,8 +73,9 @@ def retry(callback, try_count=200, try_delay=0.1):
   for _ in xrange(try_count):
     result = callback()
     if result:
-      return result
+      break
     time.sleep(try_delay)
+  return result
 
 class FakeStreamRequest(object):
   """