Fix operator precedence.
Fix operator precedence.

flaviogrossi/billiard,andresriancho/billiard,jakirkham/billiard,andresriancho/billiard,pombredanne/billiard,jakirkham/billiard,djsmith42/billiard,djsmith42/billiard,pombredanne/billiard,flaviogrossi/billiard