RFR: 8282862: AwtWindow::SetIconData leaks old icon handles if an exception is detected [v4]

[Alexander Zvegintsev]

On Wed, 15 Jan 2025 21:52:52 GMT, Rajat Mahajan <rmahajan at openjdk.org> wrote:

>> **Issue:** 
>> AwtWindow::SetIconData leaks the old icon handles in hOldIcon and hOldIconSm if CreateIconFromRaster raises an exception. Additionally, an exception is checked only after the first call to CreateIconFromRaster.
>> 
>> **Solution:**
>> I have added the exception handling code to take care that the handles are properly destroyed and not leaked.
>> 
>> **Testing:**
>> I have tested the code to make sure there are no regressions caused by this.
>
> Rajat Mahajan has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update code according to the feedback in code review

Marked as reviewed by azvegint (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk/pull/22932#pullrequestreview-2558894206