D-Bus: Fix WPS ConfigMethods getter to handle no value properly

wpas_dbus_simple_property_getter() cannot be used with NULL
DBUS_TYPE_STRING, so replace that with an empty string to handle the
case of no config_methods parameter in the configuration.

Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/wpa_supplicant/dbus/dbus_new_handlers_wps.c b/wpa_supplicant/dbus/dbus_new_handlers_wps.c
index 8ecf7db..4226f2f 100644 (file)
--- a/wpa_supplicant/dbus/dbus_new_handlers_wps.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers_wps.c
@@ -408,6 +408,8 @@ dbus_bool_t wpas_dbus_getter_config_methods(DBusMessageIter *iter,
        struct wpa_supplicant *wpa_s = user_data;
        char *methods = wpa_s->conf->config_methods;
 
+       if (methods == NULL)
+               methods = "";
        return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_STRING,
                                                &methods, error);
 }