Merge "Fix UDFPS enrolling crash" into udc-dev am: 8e3c46b1c9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/21617267

Change-Id: I4c8fd5ae3709aa93fa269e93eac09ce0be0bb570
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

src/com/android/settings/biometrics2/ui/widget/UdfpsEnrollView.java

@@ -226,6 +226,10 @@ public class UdfpsEnrollView extends FrameLayout {
         }
 
         DisplayInfo displayInfo = new DisplayInfo();
+        if (getDisplay() == null) {
+            android.util.Log.e(TAG, "Can not get display");
+            return;
+        }
         getDisplay().getDisplayInfo(displayInfo);
         Rect udfpsBounds = mSensorProperties.getLocation().getRect();
         float scaleFactor = mUdfpsUtils.getScaleFactor(displayInfo);