git: openjdk/jdk: 8292955: Collections.checkedMap Map.merge does not properly check key and value

[Per Minborg]

Changeset: b5e1615c
Author:    Korov <korov at korov-win-laptop>
Committer: Per Minborg <pminborg at openjdk.org>
Date:      2024-05-28 06:43:07 +0000
URL:       https://git.openjdk.org/jdk/commit/b5e1615c0084538f2161fe9b56748d188983e972

8292955: Collections.checkedMap Map.merge does not properly check key and value

Reviewed-by: gli, liach, pminborg

! src/java.base/share/classes/java/util/Collections.java
! test/jdk/java/util/Collections/CheckedMapBash.java