船到橋門自會直 [－－桥门－会－]

Jyutping syun4 dou3 kiu4 mun4 zi6 wui3 zik6
Pinyin chuán dào qiáo mén zì huì zhí

Definitions (CC-CEDICT)
  1. lit. when the ship arrives at the bridge we can deal with the problem
  2. no point in worrying about sth until it actually happens (idiom)