Revert "Using simpler entries capture from @jagerman"

This reverts commit 2d440e0.

Author: henryiii

include/pybind11/pybind11.h

@@ -1362,23 +1362,23 @@ template <typename Type> class enum_ : public class_<Type> {
 
         constexpr bool is_arithmetic = detail::any_of<std::is_same<arithmetic, Extra>...>::value;
 
-        dict& entries = m_entries;
-        def("__repr__", [name, entries](Type value) -> pybind11::str {
-            for (const auto &kv : entries) {
+        auto m_entries_ptr = m_entries.inc_ref().ptr();
+        def("__repr__", [name, m_entries_ptr](Type value) -> pybind11::str {
+            for (const auto &kv : reinterpret_borrow<dict>(m_entries_ptr)) {
                 if (pybind11::cast<Type>(kv.second) == value)
                     return pybind11::str("{}.{}").format(name, kv.first);
             }
             return pybind11::str("{}.???").format(name);
         });
-        def_property_readonly_static("__members__", [entries](object /* self */) {
+        def_property_readonly_static("__members__", [m_entries_ptr](object /* self */) {
             dict m;
-            for (const auto &kv : entries)
+            for (const auto &kv : reinterpret_borrow<dict>(m_entries_ptr))
                 m[kv.first] = kv.second;
             return m;
         }, return_value_policy::copy);
         def(init([](Scalar i) { return static_cast<Type>(i); }));
-        def(init([name, entries](std::string value) -> Type {
-            pybind11::dict values = entries;
+        def(init([name, m_entries_ptr](std::string value) -> Type {
+            pybind11::dict values = reinterpret_borrow<pybind11::dict>(m_entries_ptr);
             pybind11::str key = pybind11::str(value);
             if (values.contains(key))
                 return pybind11::cast<Type>(values[key]);