Use integral value for OLECMDID_OPTICAL_ZOOM as we cannot tell if an enum value is already defined or not.

Fixes #13475

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69085 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/missing.h

@@ -563,14 +563,6 @@ typedef enum CommandStateChangeConstants {
 #endif
 
 // For Visual C++ 6 and MinGW32. Used by webview_ie.cpp
-
-#if defined (__MINGW32__) || (_MSC_VER < 1300)
-enum
-{
-    OLECMDID_OPTICAL_ZOOM = 63
-};
-#endif
-
 #ifndef INET_E_INVALID_CERTIFICATE
 #define INET_E_INVALID_CERTIFICATE 0x800C0019L
 #endif