[automerge] handle java.lang.NullPointerException 2p: fee94b5f5a 2p: 13f117bd4f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17654104

Bug: 228541646
Change-Id: I7cd48db581b7fedb0b1bbf0d3e123259bbb7d949

services/cloudsearch/java/com/android/server/cloudsearch/CloudSearchPerUserService.java

@@ -197,7 +197,9 @@ public class CloudSearchPerUserService extends
             Slog.d(TAG, "onDestroyLocked(): requestId=" + requestId);
         }
         final CloudSearchCallbackInfo sessionInfo = mCallbackQueue.removeElement(requestId);
-        sessionInfo.destroy();
+        if (sessionInfo != null) {
+            sessionInfo.destroy();
+        }
     }
 
     @Override