add copy_out() to get a copy of the wrapped value.

src/identity.cc

@@ -22,6 +22,12 @@ namespace pEp
     {
         ::free_identity(id);
     }
+    
+    template<>
+    ::pEp_identity* Wrapper<::pEp_identity*>::copy_out()
+    {
+        return identity_dup(value);
+    }
 
 //////////////
 

src/wrapper.hh

@@ -100,6 +100,8 @@ public:
     
     const T* get() const { return value; }
     T*  move_out()       { T* r = value; value=nullptr; return r;}
+    
+    T*  copy_out();
 
 protected: