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/TextMetrics.cpp b/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
index 5041db4006..fda88cba77 100644
--- a/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
@@ -17,9 +17,14 @@ JS::NonnullGCPtr<TextMetrics> TextMetrics::create(JS::Realm& realm)
 TextMetrics::TextMetrics(JS::Realm& realm)
     : PlatformObject(realm)
 {
-    set_prototype(&Bindings::cached_web_prototype(realm, "TextMetrics"));
 }
 
 TextMetrics::~TextMetrics() = default;
 
+void TextMetrics::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::TextMetricsPrototype>(realm, "TextMetrics"));
+}
+
 }