Use nullptr instead of zero (0) as the null pointer constant

3 files changed, 4 insertions, 4 deletions

diff --git a/src/zmq/zmqabstractnotifier.h b/src/zmq/zmqabstractnotifier.h
index 77cf5141e2..7828822149 100644
--- a/src/zmq/zmqabstractnotifier.h
+++ b/src/zmq/zmqabstractnotifier.h
@@ -15,7 +15,7 @@ typedef CZMQAbstractNotifier* (*CZMQNotifierFactory)();
 class CZMQAbstractNotifier
 {
 public:
-    CZMQAbstractNotifier() : psocket(0) { }
+    CZMQAbstractNotifier() : psocket(nullptr) { }
     virtual ~CZMQAbstractNotifier();
 
     template <typename T>
diff --git a/src/zmq/zmqnotificationinterface.cpp b/src/zmq/zmqnotificationinterface.cpp
index c410cc269f..9909395d84 100644
--- a/src/zmq/zmqnotificationinterface.cpp
+++ b/src/zmq/zmqnotificationinterface.cpp
@@ -120,7 +120,7 @@ void CZMQNotificationInterface::Shutdown()
         }
         zmq_ctx_destroy(pcontext);
 
-        pcontext = 0;
+        pcontext = nullptr;
     }
 }
 
diff --git a/src/zmq/zmqpublishnotifier.cpp b/src/zmq/zmqpublishnotifier.cpp
index 700c39f66e..ab54e2bb8b 100644
--- a/src/zmq/zmqpublishnotifier.cpp
+++ b/src/zmq/zmqpublishnotifier.cpp
@@ -126,7 +126,7 @@ void CZMQAbstractPublishNotifier::Shutdown()
         zmq_close(psocket);
     }
 
-    psocket = 0;
+    psocket = nullptr;
 }
 
 bool CZMQAbstractPublishNotifier::SendMessage(const char *command, const void* data, size_t size)
@@ -136,7 +136,7 @@ bool CZMQAbstractPublishNotifier::SendMessage(const char *command, const void* d
     /* send three parts, command & data & a LE 4byte sequence number */
     unsigned char msgseq[sizeof(uint32_t)];
     WriteLE32(&msgseq[0], nSequence);
-    int rc = zmq_send_multipart(psocket, command, strlen(command), data, size, msgseq, (size_t)sizeof(uint32_t), (void*)0);
+    int rc = zmq_send_multipart(psocket, command, strlen(command), data, size, msgseq, (size_t)sizeof(uint32_t), nullptr);
     if (rc == -1)
         return false;