From 32f19c1eae3ead86987fa353f3f3e7e6fadb47eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20W=C3=BClker?= <simon.wuelker@arcor.de>
Date: Mon, 17 Feb 2025 22:33:11 +0100
Subject: [PATCH] Don't attempt to report style attribute for non-htmlelements
 to devtools (#35519)
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Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
---
 components/script/devtools.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/components/script/devtools.rs b/components/script/devtools.rs
index 7718486c14d..66e22fc7b4e 100644
--- a/components/script/devtools.rs
+++ b/components/script/devtools.rs
@@ -198,9 +198,11 @@ pub(crate) fn handle_get_attribute_style(
         Some(found_node) => found_node,
     };
 
-    let elem = node
-        .downcast::<HTMLElement>()
-        .expect("This should be an HTMLElement");
+    let Some(elem) = node.downcast::<HTMLElement>() else {
+        // the style attribute only works on html elements
+        reply.send(None).unwrap();
+        return;
+    };
     let style = elem.Style();
 
     let msg = (0..style.Length())