Fix runtime critical on incoming read marker

This would result in all messages being counted as unread and highlighted in the conversation list accordingly.
As of fa1ba2f8, there are no hidden content items for http file upload _messages_ anymore.

1 files changed, 2 insertions, 0 deletions

diff --git a/libdino/src/service/counterpart_interaction_manager.vala b/libdino/src/service/counterpart_interaction_manager.vala
index 03eb6c6f..cc5489c3 100644
--- a/libdino/src/service/counterpart_interaction_manager.vala
+++ b/libdino/src/service/counterpart_interaction_manager.vala
@@ -153,7 +153,9 @@ public class CounterpartInteractionManager : StreamInteractionModule, Object {
             if (conversation.read_up_to != null && conversation.read_up_to.local_time.compare(message.local_time) > 0) return;
             conversation.read_up_to = message;
 
+            // TODO: This only marks messages as read, not http file transfers.
             ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item(conversation, 1, message.id);
+            if (content_item == null) return;
             ContentItem? read_up_to_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item_by_id(conversation, conversation.read_up_to_item);
             if (read_up_to_item != null && read_up_to_item.compare(content_item) > 0) return;
             conversation.read_up_to_item = content_item.id;