Merge pull request #576 from JoelJ/patch-2

[FIXED JENKINS-18626] - Test result page keeps identifying tests as age 1

core/src/main/java/hudson/tasks/junit/CaseResult.java

@@ -373,7 +373,7 @@ public class CaseResult extends TestResult implements Comparable<CaseResult> {
         if (failedSince==0 && getFailCount()==1) {
             CaseResult prev = getPreviousResult();
             if(prev!=null && !prev.isPassed())
-                this.failedSince = prev.failedSince;
+                this.failedSince = prev.getFailedSince();
             else if (getOwner() != null) {
                 this.failedSince = getOwner().getNumber();
             } else {