fix: handle error from http.ListenAndServe in SteamCache

steamcache/steamcache.go

@@ -80,16 +80,17 @@ func (sc *SteamCache) Run() {
 	sc.mu.Unlock()
 
 	sc.LogStats()
-
 	t := time.NewTicker(10 * time.Second)
 	go func() {
 		for range t.C {
-			// log cache stats
 			sc.LogStats()
 		}
 	}()
 
-	http.ListenAndServe(sc.address, sc)
+	err := http.ListenAndServe(sc.address, sc)
+	if err != nil {
+		log.Fatal(err)
+	}
 }
 
 func (sc *SteamCache) LogStats() {