Sonar suggestions - fixes to potential null pointer dereferences

Change-Id: I4e350a9d72a9322971d5d4f831f1bdf167986b87
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpReachNlri.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpReachNlri.java
index 106c4bb..578f4fe 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpReachNlri.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpReachNlri.java
@@ -447,7 +447,7 @@
             if (listIterator.hasNext()) {
                 tlv1 = listIterator.next();
             }
-            while (listIterator.hasNext()) {
+            while (tlv1 != null && listIterator.hasNext()) {
                 BgpValueType tlv = listIterator.next();
                 if (tlv.getType() != tlv1.getType()) {
                     isAllFlowTypesIdentical = false;
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpUnReachNlri.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpUnReachNlri.java
index e06fb0a..ac63ba7 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpUnReachNlri.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/MpUnReachNlri.java
@@ -402,7 +402,7 @@
             if (listIterator.hasNext()) {
                 tlv1 = listIterator.next();
             }
-            while (listIterator.hasNext()) {
+            while (tlv1 != null && listIterator.hasNext()) {
                 BgpValueType tlv = listIterator.next();
                 if (tlv.getType() != tlv1.getType()) {
                     isAllFlowTypesIdentical = false;
diff --git a/protocols/pcep/server/ctl/src/main/java/org/onosproject/pcep/server/impl/PcepClientControllerImpl.java b/protocols/pcep/server/ctl/src/main/java/org/onosproject/pcep/server/impl/PcepClientControllerImpl.java
index 2ddc819..1bb5610 100644
--- a/protocols/pcep/server/ctl/src/main/java/org/onosproject/pcep/server/impl/PcepClientControllerImpl.java
+++ b/protocols/pcep/server/ctl/src/main/java/org/onosproject/pcep/server/impl/PcepClientControllerImpl.java
@@ -1005,6 +1005,10 @@
                     }
                 }
 
+                if (ipv4LspIdenTlv == null) {
+                    return false;
+                }
+
                 LspKey lspKeyOfRpt = new LspKey(lspObj.getPlspId(), ipv4LspIdenTlv.getLspId());
                 tunnel = preSyncLspDbByKey.get(lspKeyOfRpt);
                 // PCE tunnel is matched with PCRpt LSP. Now delete it from the preSyncLspDb list as the residual
@@ -1059,7 +1063,8 @@
                 // State different for PCC sent LSP and PCE known LSP, send PCUpd msg.
                 State tunnelState = PcepLspStatus
                         .getTunnelStatusFromLspStatus(PcepLspStatus.values()[lspObj.getOFlag()]);
-                if (tunnelState != tunnel.state()) {
+
+                if (tunnel != null && tunnelState != tunnel.state()) {
                     for (PcepEventListener l : pcepEventListener) {
                         l.handleEndOfSyncAction(tunnel, SEND_UPDATE);
                     }