From 670bbf24e54437e63d86ffd747a0d432477db191 Mon Sep 17 00:00:00 2001
From: Andi Gallo <andigallo@proton.me>
Date: Wed, 9 Aug 2023 22:36:46 +0000
Subject: [PATCH] LibWeb: Check paintable of target against null in mousewheel
 handling

---
 .../Libraries/LibWeb/Page/EventHandler.cpp     | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/Userland/Libraries/LibWeb/Page/EventHandler.cpp b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
index db9bb5080c..57e25fb5be 100644
--- a/Userland/Libraries/LibWeb/Page/EventHandler.cpp
+++ b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
@@ -163,16 +163,16 @@ bool EventHandler::handle_mousewheel(CSSPixelPoint position, unsigned button, un
     if (auto result = target_for_mouse_position(position); result.has_value())
         paintable = result->paintable;
 
-    auto* containing_block = paintable->containing_block();
-    while (containing_block) {
-        if (containing_block->is_user_scrollable()) {
-            const_cast<Painting::PaintableBox*>(containing_block->paintable_box())->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x * scroll_step_size, wheel_delta_y * scroll_step_size);
-            break;
-        }
-        containing_block = containing_block->containing_block();
-    }
-
     if (paintable) {
+        auto* containing_block = paintable->containing_block();
+        while (containing_block) {
+            if (containing_block->is_user_scrollable()) {
+                const_cast<Painting::PaintableBox*>(containing_block->paintable_box())->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x * scroll_step_size, wheel_delta_y * scroll_step_size);
+                break;
+            }
+            containing_block = containing_block->containing_block();
+        }
+
         paintable->handle_mousewheel({}, position, buttons, modifiers, wheel_delta_x, wheel_delta_y);
 
         auto node = dom_node_for_event_dispatch(*paintable);