fix crash on invalid res

1 files changed, 2 insertions, 1 deletions

diff --git a/app.js b/app.js
index 627dc3f..8175dd2 100644
--- a/app.js
+++ b/app.js
@@ -52,7 +52,8 @@ function handle_application_command(state, data, channel_id) {
 
         default:
             console.error(`unknown command: ${name}`);
-            return res.status(400).json({ error: "unknown command" });
+            if (res) return res.status(400).json({ error: "unknown command" });
+            else return null;
     }
 }