[JENKINS-41276] Fixed some review comments

src/main/java/org/jenkinsci/plugins/workflow/steps/RetryStepExecution.java

@@ -67,13 +67,11 @@ public void onFailure(StepContext context, Throwable t) {
             try {
                 Run run = context.get(Run.class);
                 if (run != null && t instanceof FlowInterruptedException) {
-                    InterruptedBuildAction action = run.getAction(InterruptedBuildAction.class);
-                    if (action != null) {
-                        for (CauseOfInterruption cause : action.getCauses()) {
-                            if (cause instanceof CauseOfInterruption.UserInterruption) {
-                                context.onFailure(t);
-                                return;
-                            }
+                    FlowInterruptedException fie = (FlowInterruptedException) t;
+                    for (CauseOfInterruption cause : fie.getCauses()) {
+                        if (cause instanceof CauseOfInterruption.UserInterruption) {
+                            context.onFailure(t);
+                            return;
                         }
                     }
                 }

src/test/java/org/jenkinsci/plugins/workflow/steps/RetryStepTest.java

@@ -31,7 +31,7 @@ public class RetryStepTest {
     public void abortShouldNotRetry() throws Exception {
         WorkflowJob p = r.jenkins.createProject(WorkflowJob.class, "p");
         p.setDefinition(new CpsFlowDefinition(
-                "int count = 0; retry(3) { echo 'trying '+(count++); semaphore 'start'; sleep 10; echo 'NotHere' }", false));
+                "int count = 0; retry(3) { echo 'trying '+(count++); semaphore 'start'; echo 'NotHere' }", true));
         WorkflowRun b = p.scheduleBuild2(0).waitForStart();
         SemaphoreStep.waitForStart("start/1", b);
         b.doStop();