Replace useless assertion with type check by instanceof

Change-Id: I6b80e42e47579914776497f2314b9aa75d98dabf
diff --git a/pcep/pcepio/src/test/java/org/onosproject/pcepio/PcepCloseMsgTest.java b/pcep/pcepio/src/test/java/org/onosproject/pcepio/PcepCloseMsgTest.java
index 43a65d9..8faab55 100644
--- a/pcep/pcepio/src/test/java/org/onosproject/pcepio/PcepCloseMsgTest.java
+++ b/pcep/pcepio/src/test/java/org/onosproject/pcepio/PcepCloseMsgTest.java
@@ -25,8 +25,8 @@
 import org.onosproject.pcepio.protocol.PcepMessageReader;
 
 import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.core.Is.is;
-import static org.hamcrest.core.IsSame.sameInstance;
 
 public class PcepCloseMsgTest {
 
@@ -46,7 +46,7 @@
         PcepMessage message;
 
         message = reader.readFrom(buffer);
-        assertThat(message, sameInstance((PcepCloseMsg) message));
+        assertThat(message, instanceOf(PcepCloseMsg.class));
 
         ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
         message.writeTo(buf);