Fix OOM issue of InCallUI

CallButtonPresenter didn't remove
itself from InCallPresenter(CanAddCallListener).

Change-Id: I2ad979d9eebeb110b03e5a1c103d7a4f98e317c0

src/com/android/incallui/CallCardFragment.java

diff --git a/src/com/android/incallui/CallCardFragment.java b/src/com/android/incallui/CallCardFragment.java
index fb0ef75..0315988 100644
--- a/src/com/android/incallui/CallCardFragment.java
+++ b/src/com/android/incallui/CallCardFragment.java
@@ -1081,6 +1081,9 @@
                         setViewStatePostAnimation(listener);
                         mIsAnimating = false;
                         InCallPresenter.getInstance().onShrinkAnimationComplete();
+                        if (animator != null) {
+                            animator.removeListener(this);
+                        }
                     }
                 });
                 animator.start();