Upgrade to jeromq 5.2

sawtooth-sdk-transaction-processor/pom.xml

@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.zeromq</groupId>
             <artifactId>jeromq</artifactId>
-            <version>0.3.6</version>
+            <version>0.5.2</version>
         </dependency>
         <dependency>
             <groupId>com.google.protobuf</groupId>

sawtooth-sdk-transaction-processor/src/main/java/sawtooth/sdk/messaging/SendReceiveThread.java

@@ -279,7 +279,7 @@ public void run() {
     } finally {
       lock.unlock();
     }
-    ZLoop eventLoop = new ZLoop();
+    ZLoop eventLoop = new ZLoop(this.context);
     ZMQ.PollItem pollItem = new ZMQ.PollItem(socket, ZMQ.Poller.POLLIN);
     eventLoop.addPoller(pollItem, new Receiver(futures, receiveQueue), new Object());
     eventLoop.start();