oleaut32: Fix copy & paste issue in VarFormatNumber

[Bruno Jesus]

Fixes https://bugs.winehq.org/show_bug.cgi?id=37874
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diff --git a/dlls/oleaut32/varformat.c b/dlls/oleaut32/varformat.c
index 0e1c370..ec52a1e 100644
--- a/dlls/oleaut32/varformat.c
+++ b/dlls/oleaut32/varformat.c
@@ -2326,7 +2326,7 @@ HRESULT WINAPI VarFormatNumber(LPVARIANT pVarIn, INT nDigits, INT nLeading, INT
     GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, decimal,
                    sizeof(decimal)/sizeof(WCHAR));
     numfmt.lpThousandSep = thousands;
-    GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, thousands,
+    GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, thousands,
                    sizeof(thousands)/sizeof(WCHAR));
 
     if (GetNumberFormatW(LOCALE_USER_DEFAULT, 0, V_BSTR(&vStr), &numfmt,