Fix the bug when user type in NONE when selecting CAs

Change-Id: Ie12c058ec0685a537300f11dd227771f8e719c28
diff --git a/src/client-config.hpp b/src/client-config.hpp
index ddbdc74..ba02efa 100644
--- a/src/client-config.hpp
+++ b/src/client-config.hpp
@@ -68,6 +68,9 @@
   load(const JsonSection& configSection);
 
   void
+  save(const std::string& fileName);
+
+  void
   addNewCaItem(const ClientCaItem& item);
 
   void