Fix for overlapping call state label

Canceling the animation is not enough to force a redraw of the call state label.
Set the text to null instead.

Bug: 17073203
Change-Id: Ib731e18a0d2311c0cf9f41953fadfa4ec019310c
1 file changed
tree: 99ebe14a2d873a5c0c262c9b13533ffa9f139ad0
  1. InCallUI/