From 55696424ce978acb045f4dbf8ba8b2a493aa8d06 Mon Sep 17 00:00:00 2001
From: Nick Mills-Barrett <nick@beeper.com>
Date: Tue, 15 Sep 2026 16:51:31 +0100
Subject: [PATCH] handlelinkedin: guard against nil reacted-to message

Realtime reaction summaries for a message with no local part crashed the
process: GetFirstPartByID returns (nil, nil) on not-found but the handler
only checked the error before dereferencing messageData.Room.

Return early when the reacted-to message isn't found, matching the seen
receipt handler.
---
 pkg/connector/handlelinkedin.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/connector/handlelinkedin.go b/pkg/connector/handlelinkedin.go
index 326d554..dab2217 100644
--- a/pkg/connector/handlelinkedin.go
+++ b/pkg/connector/handlelinkedin.go
@@ -217,6 +217,9 @@ func (l *LinkedInClient) onRealtimeReactionSummaries(ctx context.Context, summar
 	if err != nil {
 		zerolog.Ctx(ctx).Err(err).Msg("failed to get reacted to message")
 		return
+	} else if messageData == nil {
+		zerolog.Ctx(ctx).Warn().Msg("couldn't find reacted to message")
+		return
 	}
 
 	meta := simplevent.EventMeta{