Don't wtf if second InCallActivity is set

Setting a second InCallActivity before destroying the first is
unexpected but not irrecoverable, so don't crash.

Bug: 21806586
Change-Id: I817041ff6bae900c3b9f225ec66fe223c877e68d
1 file changed
tree: 1dd0f2cf2dccd375cdb6b14e1107a709cd031eb3
  1. InCallUI/