[jdk17u-dev] RFR: 8320692: Null icon returned for .exe without custom icon

[Martin Doerr]

Clean backport of [JDK-8320692](https://bugs.openjdk.org/browse/JDK-8320692).

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Commit messages:
 - Backport 6212264cc6fe428e8d15b7f33e2979c081e432d7

Changes: https://git.openjdk.org/jdk17u-dev/pull/2527/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2527&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320692
  Stats: 282 lines in 2 files changed: 280 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2527.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2527/head:pull/2527

PR: https://git.openjdk.org/jdk17u-dev/pull/2527