Add a null a check in fingerprint service

Fixes: 62918794
Test: ran the command from the bug report

Change-Id: Ib00ee46f775c07be5b1e821528dd390ed978b58e
diff --git a/services/core/java/com/android/server/fingerprint/FingerprintService.java b/services/core/java/com/android/server/fingerprint/FingerprintService.java
index ef40a1c..c9f92d2 100644
--- a/services/core/java/com/android/server/fingerprint/FingerprintService.java
+++ b/services/core/java/com/android/server/fingerprint/FingerprintService.java
@@ -619,6 +619,15 @@
 
     void startRemove(IBinder token, int fingerId, int groupId, int userId,
             IFingerprintServiceReceiver receiver, boolean restricted, boolean internal) {
+        if (token == null) {
+            Slog.w(TAG, "startRemove: token is null");
+            return;
+        }
+        if (receiver == null) {
+            Slog.w(TAG, "startRemove: receiver is null");
+            return;
+        }
+
         IBiometricsFingerprint daemon = getFingerprintDaemon();
         if (daemon == null) {
             Slog.w(TAG, "startRemove: no fingerprint HAL!");