Use phone-hangup sound

Author: lenemter

src/DBus.vala

@@ -238,9 +238,11 @@ public class Notifications.Server : Object {
 
         switch (category) {
             case "call":
-            case "call.ended":
                 sound = "dialog-information";
                 break;
+            case "call.ended":
+                sound = "phone-hangup";
+                break;
             case "call.incoming":
                 sound = "phone-incoming-call";
                 break;