Cleanup light service.

Test: make
Change-Id: I0cd0c3309a349a5fc9a7de5b4b6ec2df33dbb822
diff --git a/light/2.0/default/service.cpp b/light/2.0/default/service.cpp
index 582d224..e446878 100644
--- a/light/2.0/default/service.cpp
+++ b/light/2.0/default/service.cpp
@@ -27,11 +27,11 @@
     ALOGI("Retrieving default implementation of instance %s.",
           instance);
 
-    android::sp<ILight> service = ILight::getService(instance, true);
+    android::sp<ILight> service = ILight::getService(instance, true /* getStub */);
 
     if (service.get() == nullptr) {
         ALOGE("ILight::getService returned NULL, exiting");
-        return -1;
+        return EXIT_FAILURE;
     }
 
     LOG_FATAL_IF(service->isRemote(), "Implementation is REMOTE!");