[fractal/fractal-next] user: Fix broken display-name property

[Julian Sparber <jsparber src gnome org>]

commit d545bfc220de2186de29214f01f39ee9351fa536
Author: Julian Sparber <julian sparber net>
Date:   Thu Dec 2 18:12:51 2021 +0100

    user: Fix broken display-name property

 src/session/user.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/session/user.rs b/src/session/user.rs
index 62ce0906..1bcac1c9 100644
--- a/src/session/user.rs
+++ b/src/session/user.rs
@@ -64,7 +64,7 @@ mod imp {
 
         fn set_property(
             &self,
-            _obj: &Self::Type,
+            obj: &Self::Type,
             _id: usize,
             value: &glib::Value,
             pspec: &glib::ParamSpec,
@@ -74,6 +74,9 @@ mod imp {
                     let user_id = value.get::<&str>().unwrap().try_into().unwrap();
                     self.user_id.set(user_id).unwrap();
                 }
+                "display-name" => {
+                    obj.set_display_name(value.get::<Option<String>>().unwrap());
+                }
                 "session" => self
                     .session
                     .set(value.get::<Session>().unwrap().downgrade())