7078355: sun/net/www/protocol/file/DirPermissionDenied.sh leaves garbage on some linux systems

Reviewed-by: chegar
diff --git a/jdk/test/sun/net/www/protocol/file/DirPermissionDenied.sh b/jdk/test/sun/net/www/protocol/file/DirPermissionDenied.sh
index 67930b0..91eaa6c 100644
--- a/jdk/test/sun/net/www/protocol/file/DirPermissionDenied.sh
+++ b/jdk/test/sun/net/www/protocol/file/DirPermissionDenied.sh
@@ -37,5 +37,9 @@
 
 $TESTJAVA/bin/java -classpath $TESTCLASSES DirPermissionDenied ${TESTDIR}
 result=$?
+
+# Add back read access for user, otherwise not removable on some systems
+chmod u+r ${TESTDIR}
+
 rm -rf ${TESTDIR}
 exit $result