tree 49d09d2056d03dc86cee2e1f5b17092430754883
parent 6d1e41cccf08e8913d365c81aa42d5ab8bbbba4a
author Kai <kwangsudo@google.com> 1559256459 -0700
committer Kai <kwangsudo@google.com> 1559265925 -0700

Fix null object reference

getMinValue or getMaxValue can return NUll if the property config
dose not have areaConfig.

Bug: 134090471
Test: Unit test
Change-Id: If9c7b53855cd5e9ed05728cb9bfc388f259e1014
(cherry picked from commit bfb8b0dec341d30ac559938a2f1f36957d666a0d)