Replace redundant instanceof with non-null check

Change-Id: Ib86b0c8561824b1753b299f680d7d336205dd9a4
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcInitiatedLspRequestVer1.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcInitiatedLspRequestVer1.java
index 4dc2d21..06e01ae 100644
--- a/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcInitiatedLspRequestVer1.java
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcInitiatedLspRequestVer1.java
@@ -283,13 +283,13 @@
         ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass());
         toStrHelper.add("SrpObject", srpObject).add("LspObject", lspObject);
 
-        if (endPointsObject instanceof PcepEndPointsObject) {
+        if (endPointsObject != null) {
             toStrHelper.add("EndPointObject", endPointsObject);
         }
-        if (eroObject instanceof PcepEroObject) {
+        if (eroObject != null) {
             toStrHelper.add("EroObject", eroObject);
         }
-        if (pcepAttribute instanceof PcepAttribute) {
+        if (pcepAttribute != null) {
             toStrHelper.add("PcepAttribute", pcepAttribute);
         }
         return toStrHelper.toString();