When the specified key did not associated with a value, should check the `key` and `value` type.
------------- Commit messages: - 8292955: Collections.checkedMap Map.merge does not properly check key and value - 8292955: Collections.checkedMap Map.merge does not properly check key and value - 8292955: Collections.checkedMap Map.merge does not properly check key and value Changes: https://git.openjdk.org/jdk/pull/18141/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18141&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292955 Stats: 15 lines in 2 files changed: 12 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/18141.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/18141/head:pull/18141 PR: https://git.openjdk.org/jdk/pull/18141
