From 9ed359f964667d6bac09dbf67d5b1494b5d2e852 Mon Sep 17 00:00:00 2001
From: Adam Szkoda <adaszko@gmail.com>
Date: Sun, 21 May 2023 11:16:31 +0200
Subject: [PATCH] Protect a read from a map with a mutex

---
 src/server/routes.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/server/routes.go b/src/server/routes.go
index 1ab18a4..b9d6a82 100644
--- a/src/server/routes.go
+++ b/src/server/routes.go
@@ -178,7 +178,9 @@ func (s *Server) handleFeedIcon(c *router.Context) {
 	}
 
 	cachekey := "icon:" + strconv.FormatInt(id, 10)
+	s.cache_mutex.Lock()
 	cachedat := s.cache[cachekey]
+	s.cache_mutex.Unlock()
 	if cachedat == nil {
 		feed := s.db.GetFeed(id)
 		if feed == nil || feed.Icon == nil {