global: make sure to check service before checking service->port to prevent crashes

1 files changed, 1 insertions, 1 deletions

diff --git a/src/device_link_service.c b/src/device_link_service.c
index ac89211..2608b9f 100644
--- a/src/device_link_service.c
+++ b/src/device_link_service.c
@@ -84,7 +84,7 @@ static int device_link_service_get_message(plist_t dl_msg, char **message)
  */
 device_link_service_error_t device_link_service_client_new(idevice_t device, lockdownd_service_descriptor_t service, device_link_service_client_t *client)
 {
-        if (!device || service->port == 0 || !client || *client) {
+        if (!device || !service || service->port == 0 || !client || *client) {
                 return DEVICE_LINK_SERVICE_E_INVALID_ARG;
         }