Avoid duplicated definition errors for wxLongToLongHashMap when both

grid.h and fs_zip.h are included.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27195 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/hashmap.h

@@ -655,5 +655,12 @@ public: \
         (hashmap).clear();                                                   \
     }
 
+//---------------------------------------------------------------------------
+// Declarations of common hashmap classes
+
+WX_DECLARE_HASH_MAP_WITH_DECL( long, long, wxIntegerHash, wxIntegerEqual,
+                               wxLongToLongHashMap, class WXDLLIMPEXP_BASE );
+
+
 #endif // _WX_HASHMAP_H_