From b933e9666abdfcd22919dd458c930d944e1e1b7f Mon Sep 17 00:00:00 2001
From: kozec <kozec@kozec.com>
Date: Tue, 6 Jan 2015 22:40:52 +0100
Subject: [PATCH] /rest/upgrade returns HTTP/500 if STNOUPGRADE is defined

---
 cmd/syncthing/gui.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmd/syncthing/gui.go b/cmd/syncthing/gui.go
index cbf2da763..e46cd8039 100644
--- a/cmd/syncthing/gui.go
+++ b/cmd/syncthing/gui.go
@@ -571,6 +571,10 @@ func restGetEvents(w http.ResponseWriter, r *http.Request) {
 }
 
 func restGetUpgrade(w http.ResponseWriter, r *http.Request) {
+	if noUpgrade {
+		http.Error(w, upgrade.ErrUpgradeUnsupported.Error(), 500)
+		return
+	}
 	rel, err := upgrade.LatestRelease(strings.Contains(Version, "-beta"))
 	if err != nil {
 		http.Error(w, err.Error(), 500)