ffstatus/__init__.py: use logging functions correctly

ffstatus/__init__.py

@@ -95,6 +95,6 @@ def resolve_ipblock(ipaddr):
         }
 
     except urllib2.URLError as err:
-        logger.error('Error querying API:', err)
+        logger.error('Error querying ip \'{0}\' from RIPE API: {1}'.format(ipaddr, err))
         return None