hg: jdk/sandbox: 8250954: Avoid multiple warnings for external docs with mismatching modularity

[chris.hegarty at oracle.com]

Changeset: 60612063f75a
Author:    hannesw
Date:      2020-08-11 08:38 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/60612063f75a

8250954: Avoid multiple warnings for external docs with mismatching modularity
Reviewed-by: jjg

! src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Extern.java