Fix PDU session release

src/amf-app/amf_n1.cpp

@@ -3440,10 +3440,13 @@ void amf_n1::ue_initiate_de_registration_handle(
           uint32_t http_response_code = smf_responses.begin()->second.get();
 
           // Remove PDU session
+          // TODO for multiple sessions
           if ((http_response_code == 200) or (http_response_code == 204)) {
+            for (auto session : sessions_ctx) {
               uc->remove_pdu_sessions_context(session->pdu_session_id);
             }
           }
+        }
         smf_responses.erase(smf_responses.begin());
       }