define {first,second}_type in the struct declared by _WX_DECLARE_PAIR too for compatibility with std::pair, we can avoid #ifdefs in the code using the hash then (#9725)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54609 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/hashmap.h

@@ -425,6 +425,8 @@ protected: \
 CLASSEXP CLASSNAME \
 { \
 public: \
+    typedef KEY_T first_type; \
+    typedef VALUE_T second_type; \
     typedef KEY_T t1; \
     typedef VALUE_T t2; \
     typedef const KEY_T const_t1; \

tests/hashes/hashes.cpp

@@ -380,11 +380,7 @@ void MakeKeyValuePair(size_t i, size_t count, T*& key, ValueT& value)
 template <class HashMapT>
 void HashMapTest()
 {
-#if wxUSE_STL && defined HAVE_STL_HASH_MAP
     typedef typename HashMapT::value_type::second_type value_type;
-#else
-    typedef typename HashMapT::value_type::t2 value_type;
-#endif
     typedef typename HashMapT::key_type key_type;
     typedef typename HashMapT::iterator Itor;