Adjust for small changes in the native keystore interface

Test: compiled and run on bullhead device
Bug: 32020919
Change-Id: I8352b87be090ba756e3a6ea51cd691cd5594e8f7
diff --git a/gatekeeperd/gatekeeperd.cpp b/gatekeeperd/gatekeeperd.cpp
index 4d72a1a..86b6287 100644
--- a/gatekeeperd/gatekeeperd.cpp
+++ b/gatekeeperd/gatekeeperd.cpp
@@ -304,9 +304,9 @@
             sp<IBinder> binder = sm->getService(String16("android.security.keystore"));
             sp<IKeystoreService> service = interface_cast<IKeystoreService>(binder);
             if (service != NULL) {
-                status_t ret = service->addAuthToken(*auth_token, *auth_token_length);
-                if (ret != ResponseCode::NO_ERROR) {
-                    ALOGE("Falure sending auth token to KeyStore: %d", ret);
+                auto ret = service->addAuthToken(*auth_token, *auth_token_length);
+                if (!ret.isOk()) {
+                    ALOGE("Failure sending auth token to KeyStore: %" PRId32, int32_t(ret));
                 }
             } else {
                 ALOGE("Unable to communicate with KeyStore");