For this PR https://github.com/openjdk/jdk/pull/11910, the generated webrev resides here https://openjdk.github.io/cr/?repo=jdk&pr=11910&range=02. In that webrev, the test/jdk/javax/rmi/ssl/SSLSocketParametersTest.sh is a file that has been deleted in the PR. Clicking on "Old" link beside that file leads you to https://openjdk.github.io/cr/?repo=jdk&pr=11910&range=02#old-1-test/jdk/javax/rmi/ssl/SSLSocketParametersTest.sh. Notice the last line (line 57) on that rendered page, it shows this text:

57 undefined

However, in the original file https://github.com/openjdk/jdk/blob/b8c9d6cdf60ea5e680eb00d5c01a1c4d2ed04006/test/jdk/javax/rmi/ssl/SSLSocketParametersTest.sh there's nothing on line 57.