RFR: 8295847: slow debug build error after JDK-8294466

Mon Oct 24 20:20:58 UTC 2022

On Mon, 24 Oct 2022 20:01:26 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> [JDK-8294466](https://bugs.openjdk.org/browse/JDK-8294466) trimmed down the set of disabled warnings. Unfortunately it turned out that running slowdebug on linux on Oracle's CI triggered yet another warning in libsplashscreen.

Thumbs up. This is a trivial fix.

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Marked as reviewed by dcubed (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10840