Update to spice2x-25-10-07 (pre-apply)

> broken commit

util/scope_guard.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <functional>
+
+class scope_guard {
+private:
+    std::function<void()> f;
+public:
+    explicit scope_guard(std::function<void()>&& f) : f(std::move(f)) {}
+    ~scope_guard() {
+        f();
+    }
+
+    scope_guard(const scope_guard&) = delete;
+    scope_guard& operator=(const scope_guard&) = delete;
+
+    scope_guard(scope_guard&&) = delete;
+    scope_guard& operator=(scope_guard&&) = delete;
+};