tree 44b5ea2df3cff4463c9e1552546a53ed698b85e5
parent db087d3c98a37f57ae761cb8527a776958ddb01d
author Tony Wickham <twickham@google.com> 1591821412 -0500
committer Tony Wickham <twickham@google.com> 1591821412 -0500

Add null check before updating animation progress

Haven't been able to reproduce it locally, but seems theoretically
possible if we get an onDrag() event right after something else
cancels the animation (which clears the animation controller).

Bug: 157900227
Change-Id: Ia134aa948e62d39f71e41dd4e6b98f3227ae0522