RFR: 8305505: NPE in javazic compiler [v2]

[Naoto Sato]

On Wed, 26 Apr 2023 03:03:58 GMT, Yoshiki Sato <ysatowse at openjdk.org> wrote:

>> Please review this PR.  
>> With this minor change, the javazic compiler (Main.java) can produce the HTML files that display given time zone data correctly.
>
> Yoshiki Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Insert null check for mapList at its usage instead of initializing mapList

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13504#pullrequestreview-1402301927