IMS-VT: Add null check in call upgrade fail scenario

Crash is observed if call is ended in the interval wherein
handler is started to change state from REQUEST_FAILED to NO_REQUEST
after an interval. Added null check to change state only when call
exists

Change-Id: I382e8885efe0a841ce36c9ff4aff51c6c1b8791b
CRs-Fixed: 752475

1 files changed, 4 insertions, 1 deletions

diff --git a/src/com/android/incallui/VideoCallPresenter.java b/src/com/android/incallui/VideoCallPresenter.java
index c10d76a2..31635550 100644
--- a/src/com/android/incallui/VideoCallPresenter.java
+++ b/src/com/android/incallui/VideoCallPresenter.java
@@ -731,12 +731,15 @@ public class VideoCallPresenter extends Presenter<VideoCallPresenter.VideoCallUi
         } else {
             call.setSessionModificationState(Call.SessionModificationState.REQUEST_FAILED);
 
+            final Call modifyCall = call;
             // Start handler to change state from REQUEST_FAILED to NO_REQUEST after an interval.
             mSessionModificationResetHandler.postDelayed(new Runnable() {
                 @Override
                 public void run() {
-                    mPrimaryCall
+                    if (modifyCall != null) {
+                        modifyCall
                             .setSessionModificationState(Call.SessionModificationState.NO_REQUEST);
+                    }
                 }
             }, SESSION_MODIFICATION_RESET_DELAY_MS);
         }