tree 39178d1a5e0557279e0881615365d69d7c89affa
parent b4410d8acd6c04c6eced35459eaf9c41b628ca51
author bohanli <bohanli@google.com> 1579213569 -0800
committer Bohan Li <bohanli@google.com> 1579289773 +0000

Fix a potential divided by zero bug.

Supposedly estimated rd cost should be always greater than zero.
This is a temporary fix to ensure it.

Will look further to check how divided by zero happened.

Change-Id: I7f9e5b4e41f0a0cb31a52bdba9f3ca54a7b44bf6