Merge "Skip updating nav bar if it was destroyed" into tm-dev am: 72d2d550e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16946073

Change-Id: I79c24973997f45be744ac896989776262b49070d

packages/SystemUI/src/com/android/systemui/navigationbar/NavigationBar.java

@@ -440,7 +440,9 @@ public class NavigationBar implements View.OnAttachStateChangeListener,
                         mHomeButtonLongPressDurationMs = Optional.of(
                             properties.getLong(HOME_BUTTON_LONG_PRESS_DURATION_MS, 0)
                         ).filter(duration -> duration != 0);
-                        reconfigureHomeLongClick();
+                        if (mNavigationBarView != null) {
+                            reconfigureHomeLongClick();
+                        }
                     }
                 }
             };