was convertIsoStringToLanguage(), use convertToLocaleWithFallback()

Change-Id: I57df767ba5bfbd7b0f9cc7420de0ddbd2fa64685

editeng/source/misc/unolingu.cxx

@@ -130,7 +130,7 @@ void ThesDummy_Impl::GetCfgLocales()
         Locale *pLocale = pLocaleSeq->getArray();
         for (sal_Int32 i = 0;  i < nLen;  ++i)
         {
-            pLocale[i] = LanguageTag::convertToLocale( pNodeNames[i] );
+            pLocale[i] = LanguageTag::convertToLocaleWithFallback( pNodeNames[i] );
         }
     }
 }