Fix crash when clicking "Save" on attachment that needs to be downloaded

k9mail/src/main/java/com/fsck/k9/ui/messageview/MessageViewFragment.java

@@ -805,7 +805,7 @@ public class MessageViewFragment extends Fragment implements ConfirmationDialogF
     @Override
     public void onSaveAttachment(AttachmentViewInfo attachment) {
         //TODO: check if we have to download the attachment first
-
+        currentAttachmentViewInfo = attachment;
         getAttachmentController(attachment).saveAttachment();
     }