FIX strange error with nginx and accept-language

larigira/rpc.py

@@ -175,9 +175,11 @@ def rpc_wip():
 
 
 def babel_get_locale():
-    if request.accept_languages:
-        return request.accept_languages[0][0]
-    return None
+    try:
+        if request.accept_languages:
+            return request.accept_languages[0][0]
+    finally:
+        return None
 
 
 def create_app(queue, larigira):