tree 961f76cae8f543ba57eea1d5ae026682298a8843
parent 3f76a8b25588c00095f8285e8f264d7dd0cab527
author Jinseong Jeon <jsjeon@google.com> 1558044160 -0700
committer Jinseong Jeon <jsjeon@google.com> 1558111907 +0000

Check other lattice element type before casting.

Otherwise, e.g., if other is range (as shown in b/132897042), meet will
raise NPE (since range's type conversion returns null).

Bug: 132897042
Change-Id: I6236b27422c0601881d90beb85708e84376064c1