minor typo

src/common/helpers.py

@@ -445,7 +445,7 @@ def from_xs_boolean_to_python_boolean(value):
 
 def ensure_unicode_string(s):
 	# py23 u'abc'.decode('utf-8') raises
-	# python24 does not. is python23 is ooold we can remove this func
+	# python24 does not. if python23 is ooold we can remove this func
 	# FIXME: remove this when we abandon py23
 	if isinstance(s, str):
 		s = s.decode('utf-8')