[SYSSETUP] WriteUserLocale(): Fix Locale[] length and value (reactos#8090)

SergeGautherie · web-flow · commit 076f08cb3e73 · 2025-06-08T16:05:22.000+02:00
'Locale' format is "0000nnnn".

CORE-15848
diff --git a/dll/win32/syssetup/wizard.c b/dll/win32/syssetup/wizard.c
@@ -1455,11 +1455,11 @@ WriteUserLocale(VOID)
 {
     HKEY hKey;
     LCID lcid;
-    WCHAR Locale[12];
+    WCHAR Locale[9] = L"0000";
 
     lcid = GetSystemDefaultLCID();
 
-    if (GetLocaleInfoW(MAKELCID(lcid, SORT_DEFAULT), LOCALE_ILANGUAGE, Locale, ARRAYSIZE(Locale)) != 0)
+    if (GetLocaleInfoW(MAKELCID(lcid, SORT_DEFAULT), LOCALE_ILANGUAGE, &Locale[4], _countof(Locale) - 4) != 0)
     {
         if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Control Panel\\International",
                             0, NULL, REG_OPTION_NON_VOLATILE,

Original file line number	Diff line number	Diff line change
`@@ -1455,11 +1455,11 @@ WriteUserLocale(VOID)`
`1455`	`1455`	`{`
`1456`	`1456`	`HKEY hKey;`
`1457`	`1457`	`LCID lcid;`
`1458`		`- WCHAR Locale[12];`
	`1458`	`+ WCHAR Locale[9] = L"0000";`
`1459`	`1459`
`1460`	`1460`	`lcid = GetSystemDefaultLCID();`
`1461`	`1461`
`1462`		`- if (GetLocaleInfoW(MAKELCID(lcid, SORT_DEFAULT), LOCALE_ILANGUAGE, Locale, ARRAYSIZE(Locale)) != 0)`
	`1462`	`+ if (GetLocaleInfoW(MAKELCID(lcid, SORT_DEFAULT), LOCALE_ILANGUAGE, &Locale[4], _countof(Locale) - 4) != 0)`
`1463`	`1463`	`{`
`1464`	`1464`	`if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Control Panel\\International",`
`1465`	`1465`	`0, NULL, REG_OPTION_NON_VOLATILE,`