From 4b00a9c0ebc84b7cb6ef1e1327748c69797b9bb4 Mon Sep 17 00:00:00 2001
From: "Jonathan Leibiusky @xetorthio" <ionathan@gmail.com>
Date: Wed, 30 Aug 2017 18:55:13 -0300
Subject: [PATCH] If session doesn't exist, don't panic!

---
 handlers/delete_instance.go | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/handlers/delete_instance.go b/handlers/delete_instance.go
index 7311e07..d8088c6 100644
--- a/handlers/delete_instance.go
+++ b/handlers/delete_instance.go
@@ -12,10 +12,15 @@ func DeleteInstance(rw http.ResponseWriter, req *http.Request) {
 	instanceName := vars["instanceName"]
 
 	s := core.SessionGet(sessionId)
-	i := core.InstanceGet(s, instanceName)
-	err := core.InstanceDelete(s, i)
-	if err != nil {
-		rw.WriteHeader(http.StatusInternalServerError)
+	if s != nil {
+		i := core.InstanceGet(s, instanceName)
+		err := core.InstanceDelete(s, i)
+		if err != nil {
+			rw.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+	} else {
+		rw.WriteHeader(http.StatusNotFound)
 		return
 	}
 }