Merge pull request #2403 from newrelic/azure_null_checks

A couple of quick null checks for completeness sake.

Author: jbedell-newrelic

instrumentation/azure-messaging-servicebus-7.15.0/src/main/java/com/azure/messaging/servicebus/ServiceBusReceiverClient_Instrumentation.java

@@ -45,7 +45,9 @@ public IterableStream<ServiceBusReceivedMessage> receiveMessages(int maxMessages
         ServiceBusReceivedMessage firstMessage = ServiceBusUtil.getFirstMessage(result);  // can't be done inside the weaved class
         if (firstMessage != null) {
             Headers headers = new HeadersWrapper(firstMessage.getApplicationProperties());
-            NewRelic.getAgent().getTransaction().acceptDistributedTraceHeaders(TransportType.ServiceBus, headers);
+            if (NewRelic.getAgent().getTransaction() != null) {
+                NewRelic.getAgent().getTransaction().acceptDistributedTraceHeaders(TransportType.ServiceBus, headers);
+            }
         }
 
         return result;

instrumentation/azure-messaging-servicebus-7.15.0/src/main/java/com/newrelic/utils/ServiceBusUtil.java

@@ -60,7 +60,9 @@ public static Flux<ServiceBusReceivedMessage> registerFluxLifecycleHooks(Flux<Se
                 .doOnNext(message -> {
                     token.linkAndExpire();
                     Headers headers = new HeadersWrapper(message.getApplicationProperties());
-                    segment.getTransaction().acceptDistributedTraceHeaders(TransportType.ServiceBus, headers);
+                    if (segment.getTransaction() != null) {
+                        segment.getTransaction().acceptDistributedTraceHeaders(TransportType.ServiceBus, headers);
+                    }
                 })
                 .doFinally(signalType -> {
                     segment.end();