use LANGUAGE_ENGLISH_US for fuzzing

Change-Id: Ieca4b4d06e6e81fc8d2187ae5b92bd95b359f74b
Reviewed-on: https://gerrit.libreoffice.org/45813Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sw/source/core/text/txtfrm.cxx

@@ -332,7 +332,9 @@ SwDigitModeModifier::SwDigitModeModifier( const OutputDevice& rOutp, LanguageTyp
         rOut( rOutp ), nOldLanguageType( rOutp.GetDigitLanguage() )
 {
     LanguageType eLang = eCurLang;
-    if (!utl::ConfigManager::IsFuzzing())
+    if (utl::ConfigManager::IsFuzzing())
+        eLang = LANGUAGE_ENGLISH_US;
+    else
     {
         const SvtCTLOptions::TextNumerals nTextNumerals = SW_MOD()->GetCTLOptions().GetCTLTextNumerals();