LibWeb: Fix that empty event handlers return null instead of crashing

1 files changed, 3 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp b/Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
index 395fc351f4..805ddf60a4 100644
--- a/Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
+++ b/Userland/Libraries/LibWeb/CodeGenerators/WrapperGenerator.cpp
@@ -1437,6 +1437,9 @@ static @fully_qualified_name@* impl_from(JS::VM& vm, JS::GlobalObject& global_ob
 )~~~");
         } else if (return_type.name == "EventHandler") {
             scoped_generator.append(R"~~~(
+    if (retval.callback.is_null())
+        return JS::js_null();
+
     return retval.callback.cell();
 )~~~");
         } else {