LibWeb: Move setting of Web object prototypes to initialize()

This needs to happen before prototype/constructor intitialization can be
made lazy. Otherwise, GC could run during the C++ constructor and try to
collect the object currently being created.

1 files changed, 6 insertions, 1 deletions

diff --git a/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp b/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
index 177277ffa4..33393346db 100644
--- a/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
@@ -23,9 +23,14 @@ PageTransitionEvent::PageTransitionEvent(JS::Realm& realm, DeprecatedFlyString c
     : DOM::Event(realm, event_name, event_init)
     , m_persisted(event_init.persisted)
 {
-    set_prototype(&Bindings::cached_web_prototype(realm, "PageTransitionEvent"));
 }
 
 PageTransitionEvent::~PageTransitionEvent() = default;
 
+void PageTransitionEvent::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::PageTransitionEventPrototype>(realm, "PageTransitionEvent"));
+}
+
 }