LibJS: Convert internal_prevent_extensions() to ThrowCompletionOr

Author: https://github.com/linusg
Commit: 73bae7d779
Pull-request: https://github.com/SerenityOS/serenity/pull/10266
Reviewed-by: https://github.com/IdanHo ✅

Userland/Libraries/LibWeb/Bindings/LocationObject.cpp

@@ -140,7 +140,7 @@ JS::ThrowCompletionOr<bool> LocationObject::internal_is_extensible() const
 }
 
 // https://html.spec.whatwg.org/multipage/history.html#location-preventextensions
-bool LocationObject::internal_prevent_extensions()
+JS::ThrowCompletionOr<bool> LocationObject::internal_prevent_extensions()
 {
     // 1. Return false.
     return false;