use SvtSysLocaleOptions::GetRealLanguageTag(), not GetLocaleConfigString()

Testing for GetLocaleConfigString() starting with a language code could never
have worked if configured was "Default - ..." in which case the config string
is an empty string.

Change-Id: I3a68a168a0f8e53c8c389fc243e40053f5d45e1f

sw/source/uibase/config/modcfg.cxx

@@ -1088,8 +1088,8 @@ void SwInsertConfig::Load()
             {
                 //#i61007#  initialize caption order, right now only HUNGARIAN seems to need a different order
                 SvtSysLocaleOptions aSysLocaleOptions;
-                OUString sLang = aSysLocaleOptions.GetLocaleConfigString();
-                bCaptionOrderNumberingFirst = sLang.startsWith( "hu" );
+                const LanguageTag& rLang = aSysLocaleOptions.GetRealLanguageTag();
+                bCaptionOrderNumberingFirst = (rLang.getLanguage() == "hu");
             }
         }