also do not crash in debug mode if an image cannot be loaded, may be corrupted, whatnot. it is pretty already, if one wants to investigate, it is easier that way

deltachat-ios/Controller/ContextMenuController.swift

@@ -74,7 +74,6 @@ class ContextMenuController: UIViewController {
 
     private func makeImageView(image: UIImage?) -> UIView? {
         guard let image = image else {
-            safe_fatalError("unexpected nil value")
             return nil
         }
 

deltachat-ios/Model/GalleryItem.swift

@@ -70,7 +70,7 @@ class GalleryItem: ContextMenuItem {
         case .webxdc:
             loadWebxdcThumbnail(from: msg)
         default:
-            safe_fatalError("unsupported viewtype - viewtype \(viewtype) not supported.")
+            return
         }
     }