checkstyle fixes

Change-Id: Ida02536e61f61b8883810866d28bdaad206f645d
diff --git a/core/api/src/test/java/org/onlab/onos/event/DefaultEventSinkRegistryTest.java b/core/api/src/test/java/org/onlab/onos/event/DefaultEventSinkRegistryTest.java
index 0bb1e8c..cde9314 100644
--- a/core/api/src/test/java/org/onlab/onos/event/DefaultEventSinkRegistryTest.java
+++ b/core/api/src/test/java/org/onlab/onos/event/DefaultEventSinkRegistryTest.java
@@ -28,11 +28,15 @@
     private DefaultEventSinkRegistry registry;
 
     private static class FooEvent extends TestEvent {
-        public FooEvent(String subject) { super(Type.FOO, subject); }
+        public FooEvent(String subject) {
+            super(Type.FOO, subject);
+        }
     }
 
     private static class BarEvent extends TestEvent {
-        public BarEvent(String subject) { super(Type.BAR, subject); }
+        public BarEvent(String subject) {
+            super(Type.BAR, subject);
+        }
     }
 
     private static class FooSink implements EventSink<FooEvent> {