Fix emission of nested while
Fix emission of nested while

cucapra/braid,guoyiteng/braid,cucapra/braid,guoyiteng/braid,guoyiteng/braid,cucapra/braid,guoyiteng/braid,guoyiteng/braid,guoyiteng/braid,cucapra/braid,cucapra/braid,cucapra/braid