From 555c3acd88e3e45e8eec089cfbd43098571d3a36 Mon Sep 17 00:00:00 2001
From: roker <roker@pep-project.org>
Date: Mon, 14 Jun 2021 15:25:54 +0200
Subject: [PATCH] fix member functions

---
 src/types.cc | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/types.cc b/src/types.cc
index c1d1c6f..c52f1ff 100644
--- a/src/types.cc
+++ b/src/types.cc
@@ -96,7 +96,7 @@ namespace pEp
     template<>
     bool StringPairList::empty() const
     {
-        return value && value->value;
+        return !(value && value->value);
     }
     
     template<>
@@ -118,14 +118,19 @@ namespace pEp
     template<>
     void StringPairList::push_back(::stringpair_t*&& sp)
     {
-        stringpair_list_add(value, sp);
+        auto last = stringpair_list_add(value, sp);
+        if(value==nullptr)
+            value = last;
+        
         sp = nullptr;
     }
     
     template<>
     void StringPairList::push_back(StringPair&& sp)
     {
-        stringpair_list_add(value, sp.move_out());
+        auto last = stringpair_list_add(value, sp.move_out());
+        if(value==nullptr)
+            value = last;
     }
     
     template<>