Address NPE when dumping sysui and navigation controller does not exist

Test: validated adb bugreport no longer throws a NPE
Bug: 66493215

Change-Id: I58f7b7af4c9fe54dca45a452b8951982d5e97fef

1 files changed, 5 insertions, 3 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarController.java
index 533771a31d0e..d226fedef706 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarController.java
@@ -264,8 +264,10 @@ public class LightBarController implements BatteryController.BatteryStateChangeC
         pw.println(" StatusBarTransitionsController:");
         mStatusBarIconController.getTransitionsController().dump(fd, pw, args);
         pw.println();
-        pw.println(" NavigationBarTransitionsController:");
-        mNavigationBarController.dump(fd, pw, args);
-        pw.println();
+        if (mNavigationBarController != null) {
+            pw.println(" NavigationBarTransitionsController:");
+            mNavigationBarController.dump(fd, pw, args);
+            pw.println();
+        }
     }
 }