notifications: avoid crash if profile is missing from trust request

Change-Id: I32a6c85ad9b60258f2bd58a7ae052e265c8a6d53
diff --git a/ring-android/app/src/main/java/cx/ring/services/NotificationServiceImpl.java b/ring-android/app/src/main/java/cx/ring/services/NotificationServiceImpl.java
index b40ef7d..77a8b5d 100644
--- a/ring-android/app/src/main/java/cx/ring/services/NotificationServiceImpl.java
+++ b/ring-android/app/src/main/java/cx/ring/services/NotificationServiceImpl.java
@@ -336,7 +336,7 @@
 
 
             VCard vCard = request.getVCard();
-            List<Photo> photos = vCard.getPhotos();
+            List<Photo> photos = vCard == null ? null : vCard.getPhotos();
             byte[] data = null;
             if (photos != null && !photos.isEmpty()) {
                 data = photos.get(0).getData();