from types import TupleType
if isinstance(value, TupleType):
new_value = _decode_header_param(value)
+ changed = new_value <> value[2]
else:
new_value = _decode_header(value)
- if new_value <> value: # do not bother to touch msg if not changed
+ changed = new_value <> value
+ if changed: # do not bother to touch msg if not changed
msg.set_param(param, new_value, header)