RFR: 8288567: [macOS] NPE at sun.lwawt.macosx.CPlatformComponent.setBounds

[kristylee88]

On Thu, 16 Jun 2022 11:30:01 GMT, Maxim Kartashev <mkartashev at openjdk.org> wrote:

> Even though I have not been able to reproduce the crash by hand, the problem and the fix are fairly obvious: 
> `CWarningWindow` doesn't have a peer, so `platformWindow.getPeer()` can be null in that case. The fix is to accomodate for that in `CPlatformComponent.setBounds()`. Similar provisions exist elsewhere in the vicinity (for ex. `CPlatformLWWindow.setBounds()`, `CPlatformWindow.maximize()`, etc).

Marked as reviewed by kristylee88 at github.com (no known OpenJDK username).

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PR: https://git.openjdk.org/jdk/pull/9184