git: openjdk/jdk-sandbox: simpleserver: small test fix

[Julia Boes]

Changeset: cf18c671
Author:    Julia Boes <julia.boes at oracle.com>
Date:      2021-08-03 12:03:48 +0000
URL:       https://git.openjdk.java.net/jdk-sandbox/commit/cf18c671087e35ab2f20236530b4d4b043a7898f

small test fix

! test/jdk/com/sun/net/httpserver/simpleserver/SimpleFileServerTest.java