Fix panic when diff (#9187) (#9193)

* fix panic when diff

* improve code
This commit is contained in:
Lunny Xiao
2019-11-28 10:07:30 -05:00
committed by techknowlogick
co-authored by techknowlogick
parent 2b257a91de
commit c4e52d232e
26 changed files with 688 additions and 8 deletions