LibWeb: Move http response method in setter

Author: https://github.com/shlyakpavel
Commit: a557632716
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2678
Reviewed-by: https://github.com/AtkinsSJ ✅

Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h

@@ -204,7 +204,7 @@ private:
 
 public:
     [[nodiscard]] ByteBuffer const& method() const { return m_method; }
-    void set_method(ByteBuffer method) { m_method = method; }
+    void set_method(ByteBuffer method) { m_method = move(method); }
 };
 
 // https://fetch.spec.whatwg.org/#concept-filtered-response