conio_s.h: Fix _W*_S_DEFINED macro name, which is used in wchar_s.h.

mingw-w64-headers/crt/sec_api/conio_s.h

diff --git a/mingw-w64-headers/crt/sec_api/conio_s.h b/mingw-w64-headers/crt/sec_api/conio_s.h
index 996d53a..95703eb 100644
--- a/mingw-w64-headers/crt/sec_api/conio_s.h
+++ b/mingw-w64-headers/crt/sec_api/conio_s.h
@@ -25,8 +25,8 @@
   _CRTIMP int __cdecl _cprintf_s_l (const char *_Format,_locale_t _Locale,...);
   _CRTIMP int __cdecl _vcprintf_s_l (const char *_Format,_locale_t _Locale,va_list _ArgList);
 
-#ifndef _WCONIO_DEFINED_S
-#define _WCONIO_DEFINED_S
+#ifndef _WCONIO_S_DEFINED
+#define _WCONIO_S_DEFINED
   _CRTIMP errno_t __cdecl _cgetws_s (wchar_t *_Buffer,size_t _SizeInWords,size_t *_SizeRead);
   __DEFINE_CPP_OVERLOAD_SECURE_FUNC_0_1(errno_t, _cgetws_s, wchar_t, _Buffer, size_t*, _SizeRead)