kernel32: Add stub for GetUserDefaultLocaleName.

dlls/kernel32/kernel32.spec

@@ -660,6 +660,7 @@
 @ stdcall GetTimeZoneInformation(ptr)
 @ stdcall GetUserDefaultLCID()
 @ stdcall GetUserDefaultLangID()
+@ stdcall GetUserDefaultLocaleName(ptr long)
 @ stdcall GetUserDefaultUILanguage()
 @ stdcall GetUserGeoID(long)
 @ stub GetVDMCurrentDirectories

dlls/kernel32/locale.c

@@ -3798,3 +3798,9 @@ INT WINAPI GetGeoInfoA(GEOID GeoId, GEOTYPE GeoType, LPSTR lpGeoData,
     FIXME("%d %d %p %d %d\n", GeoId, GeoType, lpGeoData, cchData, language);
     return 0;
 }
+
+INT WINAPI GetUserDefaultLocaleName(LPWSTR localename, int buffersize)
+{
+    FIXME("(%p, %d) stub!\n", localename,  buffersize);
+    return 0;
+}

include/winnls.h

@@ -767,6 +767,7 @@ WINBASEAPI INT         WINAPI GetTimeFormatW(LCID,DWORD,const SYSTEMTIME*,LPCWST
 #define                       GetTimeFormat WINELIB_NAME_AW(GetTimeFormat)
 WINBASEAPI LANGID      WINAPI GetUserDefaultLangID(void);
 WINBASEAPI LCID        WINAPI GetUserDefaultLCID(void);
+WINBASEAPI INT         WINAPI GetUserDefaultLocaleName(LPWSTR,int);
 WINBASEAPI LANGID      WINAPI GetUserDefaultUILanguage(void);
 WINBASEAPI GEOID       WINAPI GetUserGeoID(GEOCLASS);
 WINBASEAPI BOOL        WINAPI IsDBCSLeadByte(BYTE);