[MM-28762] Fix errcheck issues in jobs.go (#30708)

Co-authored-by: Claude <noreply@anthropic.com>

server/.golangci.yml

@@ -109,7 +109,6 @@ issues:
         channels/jobs/batch_worker_test.go|\
         channels/jobs/helper_test.go|\
         channels/jobs/hosted_purchase_screening/worker.go|\
-        channels/jobs/jobs.go|\
         channels/store/localcachelayer/channel_layer.go|\
         channels/store/localcachelayer/channel_layer_test.go|\
         channels/store/localcachelayer/emoji_layer.go|\

server/channels/jobs/jobs.go

@@ -226,7 +226,10 @@ func (srv *JobServer) HandleJobPanic(logger mlog.LoggerIFace, job *model.Job) {
 	}
 
 	sb := &strings.Builder{}
-	pprof.Lookup("goroutine").WriteTo(sb, 2)
+	err := pprof.Lookup("goroutine").WriteTo(sb, 2)
+	if err != nil {
+		logger.Error("Error fetching goroutine stack", mlog.Err(err))
+	}
 	logger.Error("Unhandled panic in job", mlog.Any("panic", r), mlog.Any("job", job), mlog.String("stack", sb.String()))
 
 	rerr, ok := r.(error)