Auto merge of #167 - pnkfelix:fix-issue-166, r=cuviper
Auto merge of #167 - pnkfelix:fix-issue-166, r=cuviper

Reorder ops in LCM to avoid overflow.

Reorder ops in LCM to avoid overflow.

Fix #166

koverstreet/num,rust-lang/num,DonSheddow/num,rust-num/num-traits,rust-num/num-traits,DonSheddow/num,vks/num,rust-lang/num,rust-num/num-integer,vks/num,rust-num/num,rust-num/num-bigint,rust-num/num-bigint,rust-num/num-integer,rust-num/num,koverstreet/num