🐛 Prevent exception on open-new-window when no window is returned

Fixes https://github.com/penpot/penpot/issues/7787

CHANGES.md

@@ -34,6 +34,7 @@
 - Fix spanish translations on import export token modal [Taiga #13171](https://tree.taiga.io/project/penpot/issue/13171)
 - Remove whitespaces from asset export filename [Github #8133](https://github.com/penpot/penpot/pull/8133)
 - Fix exception on uploading large fonts [Github #8135](https://github.com/penpot/penpot/pull/8135)
+- Fix unhandled exception on open-new-window helper [Github #7787](https://github.com/penpot/penpot/issues/7787)
 
 ## 2.12.1
 

frontend/src/app/util/dom.cljs

@@ -802,9 +802,10 @@
   ([uri name]
    (open-new-window uri name "noopener,noreferrer"))
   ([uri name features]
-   (let [new-window (.open js/window (str uri) name features)]
+   (when-let [new-window (.open js/window (str uri) name features)]
      (when (not= name "_blank")
-       (.reload (.-location new-window))))))
+       (when-let [location (.-location new-window)]
+         (.reload location))))))
 
 (defn browser-back
   []