close stream so that unit tests can delete the output directory.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@690970 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/optional/junit/FailureRecorder.java

@@ -200,6 +200,10 @@ public class FailureRecorder extends DataType implements JUnitResultFormatter, B
      * {@inheritDoc}
      */
     public void setOutput(OutputStream out) {
+        // unused, close output file so it can be deleted before the VM exits
+        if (out != System.out) {
+            FileUtils.close(out);
+        }
     }
 
     /**