LibGUI: Make Clipboard::initialize propagate errors

Author: https://github.com/LucasChollet
Commit: 5c29b45d1d
Pull-request: https://github.com/SerenityOS/serenity/pull/18648
Reviewed-by: https://github.com/AtkinsSJ ✅

Userland/Libraries/LibGUI/Clipboard.cpp

@@ -37,9 +37,10 @@ static ConnectionToClipboardServer& connection()
     return *s_connection;
 }
 
-void Clipboard::initialize(Badge<Application>)
+ErrorOr<void> Clipboard::initialize(Badge<Application>)
 {
-    s_connection = ConnectionToClipboardServer::try_create().release_value_but_fixme_should_propagate_errors();
+    s_connection = TRY(ConnectionToClipboardServer::try_create());
+    return {};
 }
 
 Clipboard& Clipboard::the()