From fd8e93baf0d429263add341ff546ed9c00dca2bb Mon Sep 17 00:00:00 2001
From: Robert Carr <racarr@google.com>
Date: Thu, 10 May 2018 13:40:25 -0700
Subject: [PATCH] Detach children in transaction.

Trivial error.

Bug: 79441653
Test: Manual
Change-Id: I8fcc60aa2b8bb44593a2e5ada2f7c0c8a08cc16a
---
 services/core/java/com/android/server/wm/AppWindowToken.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 966ca4104710b..908379701fd2a 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -919,10 +919,12 @@ class AppWindowToken extends WindowToken implements WindowManagerService.AppFree
     }
 
     void detachChildren() {
+        SurfaceControl.openTransaction();
         for (int i = mChildren.size() - 1; i >= 0; i--) {
             final WindowState w = mChildren.get(i);
             w.mWinAnimator.detachChildren();
         }
+        SurfaceControl.closeTransaction();
     }
 
     void finishRelaunching() {