[jdk18u] RFR: 8283469: Don't use memset to initialize members in FileMapInfo and fix memory leak

[Zhengyu Gu]

On Thu, 12 May 2022 21:20:15 GMT, Paul Hohensee <phh at openjdk.org> wrote:

> Leave the file close in, it's an obvious bug if it isn't. Lgtm.

Thanks, @phohensee

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PR: https://git.openjdk.java.net/jdk18u/pull/97