[mod_python] hlist repr bug

There seems to be a harmless bug in the hlistobject.c file. Line 145 is

PyString_ConcatAndDel(&s, PyString_FromString("'handler:'"));

but it should be

PyString_ConcatAndDel(&s, PyString_FromString("'handler':'"));

Note the ' between handler and :

The function involved only creates the repr output for hlist so
doesn't effect anything but got me slightly confused for a while :)