defined serialVersionUID

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@11291 71c3de6d-444a-0410-be80-ed276b4c234a

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

@@ -368,4 +368,6 @@ public final class CaseResult extends TestObject implements Comparable<CaseResul
             return lhs.getAge()-rhs.getAge();
         }
     };
+
+    private static final long serialVersionUID = 1L;
 }