service: Check NULL pointer

diff --git a/src/service.c b/src/service.c
index 5982792..4877407 100644 (file)
--- a/src/service.c
+++ b/src/service.c
@@ -4128,6 +4128,9 @@ enum connman_service_state __connman_service_ipconfig_get_state(
                                        struct connman_service *service,
                                        enum connman_ipconfig_type type)
 {
+       if (service == NULL)
+               return CONNMAN_SERVICE_STATE_UNKNOWN;
+
        if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
                return service->state_ipv4;