Fixed: With new iOS versions (and perhaps OS X), locale can contains country code

--HG--
branch : develop

code/nel/src/misc/i18n.cpp

@@ -306,13 +306,22 @@ std::string CI18N::getSystemLanguageCode ()
 				CFRelease(langCF);
 			}
 
+			if (!lang.empty())
+			{
+				// fix language code if country is specified
+				std::string::size_type pos = lang.find('-');
+
+				if (pos != std::string::npos)
+					lang = lang.substr(0, pos);
+
 				// only keep language code if supported by NeL
-			if (!lang.empty() && isLanguageCodeSupported(lang))
+				if (isLanguageCodeSupported(lang))
 				{
 					s_cachedSystemLanguage = lang;
 					break;
 				}
 			}
+		}
 
 		// don't need languages array anymore
 		CFRelease(langs);