From 234fc04efb4854a150f995e1f91402eb28de0b68 Mon Sep 17 00:00:00 2001
From: DrSlony <entertheyoni@gmail.com>
Date: Thu, 19 Mar 2015 09:39:36 +0100
Subject: [PATCH] Prevent segfault when locale invalid, issue 2717

---
 rtgui/multilangmgr.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rtgui/multilangmgr.cc b/rtgui/multilangmgr.cc
index 476dd4ba3..12b3173a0 100755
--- a/rtgui/multilangmgr.cc
+++ b/rtgui/multilangmgr.cc
@@ -138,10 +138,12 @@ Glib::ustring MultiLangMgr::getOSUserLanguage() {
         }
 #endif
 #elif defined(__linux__) || defined(__APPLE__)
-    langName = TranslateRFC2Language(setlocale(LC_CTYPE,""));
+        char *tmplocale;
+        tmplocale = setlocale(LC_CTYPE,"");
+        if(tmplocale)
+            langName = TranslateRFC2Language(tmplocale);
 #endif
     }
-
     return langName;
 }