Auto merge of #22490 - cdeler:fix-22484-issue, r=ferjm

#22484 small cleanup

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #22484 (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because it's a small code cleanup

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components/script/dom/htmlimageelement.rs

@@ -1313,7 +1313,7 @@ impl HTMLImageElement {
 
     pub fn same_origin(&self, origin: &MutableOrigin) -> bool {
         self.current_request
-            .borrow_mut()
+            .borrow()
             .final_url
             .as_ref()
             .map_or(false, |url| {