ntdll: Use WINAPIV calling convention for variadic functions.

dlls/ntdll/printf.c

@@ -709,7 +709,7 @@ int CDECL NTDLL__vsnwprintf( WCHAR *str, SIZE_T len, const WCHAR *format, __ms_v
 /*********************************************************************
  *                  _snprintf   (NTDLL.@)
  */
-int CDECL NTDLL__snprintf( char *str, SIZE_T len, const char *format, ... )
+int WINAPIV NTDLL__snprintf( char *str, SIZE_T len, const char *format, ... )
 {
     int ret;
     __ms_va_list valist;
@@ -724,7 +724,7 @@ int CDECL NTDLL__snprintf( char *str, SIZE_T len, const char *format, ... )
 /***********************************************************************
  *                  _snwprintf   (NTDLL.@)
  */
-int CDECL NTDLL__snwprintf( WCHAR *str, SIZE_T len, const WCHAR *format, ... )
+int WINAPIV NTDLL__snwprintf( WCHAR *str, SIZE_T len, const WCHAR *format, ... )
 {
     int ret;
     __ms_va_list valist;
@@ -748,7 +748,7 @@ int CDECL NTDLL_vsprintf( char *str, const char *format, __ms_va_list args )
 /*********************************************************************
  *                  sprintf   (NTDLL.@)
  */
-int CDECL NTDLL_sprintf( char *str, const char *format, ... )
+int WINAPIV NTDLL_sprintf( char *str, const char *format, ... )
 {
     int ret;
     __ms_va_list valist;
@@ -763,7 +763,7 @@ int CDECL NTDLL_sprintf( char *str, const char *format, ... )
 /***********************************************************************
  *                  swprintf   (NTDLL.@)
  */
-int CDECL NTDLL_swprintf( WCHAR *str, const WCHAR *format, ... )
+int WINAPIV NTDLL_swprintf( WCHAR *str, const WCHAR *format, ... )
 {
     int ret;
     __ms_va_list valist;

dlls/ntdll/string.c

@@ -1363,7 +1363,7 @@ static int NTDLL_vsscanf( const char *str, const char *format, __ms_va_list ap)
 /*********************************************************************
  *                  sscanf   (NTDLL.@)
  */
-int __cdecl NTDLL_sscanf( const char *str, const char *format, ... )
+int WINAPIV NTDLL_sscanf( const char *str, const char *format, ... )
 {
     int ret;
     __ms_va_list valist;

dlls/ntdll/tests/string.c

@@ -59,7 +59,7 @@ static LPWSTR   (WINAPIV *p_wcsrchr)(LPCWSTR, WCHAR);
 
 static void     (__cdecl *p_qsort)(void *,size_t,size_t, int(__cdecl *compar)(const void *, const void *) );
 static void*    (__cdecl *p_bsearch)(void *,void*,size_t,size_t, int(__cdecl *compar)(const void *, const void *) );
-static int      (__cdecl *p__snprintf)(char *, size_t, const char *, ...);
+static int      (WINAPIV *p__snprintf)(char *, size_t, const char *, ...);
 
 
 static void InitFunctionPtrs(void)