fixed callback issue

jrx/src/msg_confirm.ts

@@ -0,0 +1,33 @@
+/**
+ * Page script for "confirm sign message" popup window 
+ */
+
+
+main();
+
+async function
+main
+    ()
+    : Promise<void>
+{
+    console.log('msg_confirm main');
+    var result = null;
+    document.getElementById('good')!.onclick = () => { console.log('click good'); result = 'good' }
+    document.getElementById('bad')!.onclick = () => { console.log('click bad'); result = 'bad' }
+
+    console.log('adding listener');
+    browser.runtime.onMessage.addListener(listener);
+    console.log('added listener');
+}
+
+// for some reason the listener here never gets triggered
+async function
+listener
+    (msg           : any,
+     _sender       : any,
+     _sendResponse : any)
+    : Promise<void>
+{
+    console.log('listener triggered');
+    console.log(msg);
+}