[*] fixed unneeded trailing comma in node list

modules/service/vpn/dap_chain_net_srv_vpn_cdb_server_list.c

@@ -298,7 +298,7 @@ static void s_http_simple_proc(dap_http_simple_t *a_http_simple, void *a_arg)
                     l_count++;
                 }
             }
-            size_t l_num_print_nodes = 0;
+
             for(size_t l_c = 0; l_c < l_continents_count; l_c++) {
                 // print all nodes for continent
                 for(size_t l_n = 0; l_n < l_continents_numbers[l_c]; l_n++) {
@@ -308,12 +308,7 @@ static void s_http_simple_proc(dap_http_simple_t *a_http_simple, void *a_arg)
                             continue;
                         dap_chain_net_srv_order_t *l_order = l_orders_pos[l_o];
                         if(!order_info_print(l_reply_str, l_net, l_order, NULL, l_n)) {
-                            //if(l_o != l_orders_num - 1)
-                            l_num_print_nodes++;
-                            if(l_num_print_nodes < l_orders_used_num)
-                                dap_string_append_printf(l_reply_str, ",\n");
-                            else
-                                dap_string_append_printf(l_reply_str, "\n");
+                            dap_string_append_printf(l_reply_str, ",\n");
                         }
                         break;
                     }
@@ -322,6 +317,12 @@ static void s_http_simple_proc(dap_http_simple_t *a_http_simple, void *a_arg)
         }
     }
     DAP_DELETE(l_geoip_info);
+    //delete trailing comma if exists
+    if(l_reply_str->str[l_reply_str->len - 2] == ','){
+        dap_string_truncate(l_reply_str, l_reply_str->len - 2);
+        dap_string_append_printf(l_reply_str, "\n");
+    }
+
     dap_string_append_printf( l_reply_str, "]\n\n");
     dap_http_simple_reply( a_http_simple, l_reply_str->str, l_reply_str->len );
     dap_string_free(l_reply_str, true);