avatar: show group members

Change-Id: I686a6d590689b70d8150a50fe01df20186b664c5

jami-android/app/src/main/java/cx/ring/views/AvatarDrawable.kt

@@ -239,7 +239,7 @@ class AvatarDrawable : Drawable {
             for (contact in contacts) {
                 if (contact.contact.isUser) continue
                 notTheUser++
-                val bitmap = profile.avatar as? Bitmap?
+                val bitmap = contact.profile.avatar as? Bitmap?
                 if (bitmap != null) {
                     bitmaps.add(bitmap)
                 }