am 3c80805d: Catch null Call to avoid NullPointerException.

* commit '3c80805def993eef821931970723e2b927fdf552':
  Catch null Call to avoid NullPointerException.
diff --git a/InCallUI/src/com/android/incallui/VideoCallPresenter.java b/InCallUI/src/com/android/incallui/VideoCallPresenter.java
index ea0652a..f439f6b 100644
--- a/InCallUI/src/com/android/incallui/VideoCallPresenter.java
+++ b/InCallUI/src/com/android/incallui/VideoCallPresenter.java
@@ -568,6 +568,9 @@
     public void onDetailsChanged(Call call, android.telecom.Call.Details details) {
         Log.d(this, " onDetailsChanged call=" + call + " details=" + details + " mPrimaryCall="
                 + mPrimaryCall);
+        if (call == null) {
+            return;
+        }
         // If the details change is not for the currently active call no update is required.
         if (!call.equals(mPrimaryCall)) {
             Log.d(this," onDetailsChanged: Details not for current active call so returning. ");