include: Move __acrt_iob_func declaration to corecrt_wstdio.h.

include/msvcrt/corecrt_wstdio.h

@@ -41,6 +41,12 @@ typedef struct _iobuf
 #define WEOF        (wint_t)(0xFFFF)
 #endif
 
+FILE *__cdecl __acrt_iob_func(unsigned index);
+
+#define stdin  (__acrt_iob_func(0))
+#define stdout (__acrt_iob_func(1))
+#define stderr (__acrt_iob_func(2))
+
 wint_t   __cdecl _fgetwc_nolock(FILE*);
 wint_t   __cdecl _fgetwchar(void);
 wint_t   __cdecl _fputwc_nolock(wint_t,FILE*);

include/msvcrt/stdio.h

@@ -61,12 +61,6 @@ FILE* __cdecl __iob_func(void);
 # endif
 #endif /* _STDIO_DEFINED */
 
-FILE *__cdecl __acrt_iob_func(unsigned index);
-
-#define stdin  (__acrt_iob_func(0))
-#define stdout (__acrt_iob_func(1))
-#define stderr (__acrt_iob_func(2))
-
 /* return value for _get_output_format */
 #define _TWO_DIGIT_EXPONENT 0x1