RFR: 8288067: Avoid redundant HashMap.containsKey call in Type1Font.expandAbbreviation

[Phil Race]

On Wed, 8 Jun 2022 17:50:35 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> Instead of pair HashMap.containsKey/HashMap.get method calls, we can use single call HashMap.getOrDefault.
> It's faster and clearer.

Marked as reviewed by prr (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/9089