git: openjdk/mobile: 8240169: javadoc fails to link to non-modular api docs

[duke]

Changeset: ac8d4208
Author:    Hannes Wallnöfer <hannesw at openjdk.org>
Date:      2020-04-08 22:04:51 +0000
URL:       https://git.openjdk.java.net/mobile/commit/ac8d4208

8240169: javadoc fails to link to non-modular api docs

Reviewed-by: jjg

! src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Extern.java
! test/langtools/jdk/javadoc/doclet/testClassCrossReferences/TestClassCrossReferences.java
! test/langtools/jdk/javadoc/doclet/testLinkOption/TestLinkOptionWithModule.java