RFR: 8351653: Webkit debug build failure after update to 620.1

[Kevin Rushforth]

On Thu, 13 Mar 2025 05:04:00 GMT, Jay Bhaskar <jbhaskar at openjdk.org> wrote:

> issue : build fails on debug mode. invalid casting
> Solution: the casting should be with char* , need to use SourceUTF8().data()

Looks good. This fixes the debug build on macOS. We already have an older bug, [JDK-8329874](https://bugs.openjdk.org/browse/JDK-8329874), tracking the debug build failures on Windows and Linux.

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Marked as reviewed by kcr (Lead).

PR Review: https://git.openjdk.org/jfx/pull/1732#pullrequestreview-2685899306