[jdk17u-dev] RFR: 8280468: Crashes in getConfigColormap, getConfigVisualId, XVisualIDFromVisual on Linux

[Goetz Lindenmaier]

I backport this for parity with 17.0.16-oracle.

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Commit messages:
 - Backport 05dac5a23ed2813b2f4f2e4f007ebb93b4ae23ef

Changes: https://git.openjdk.org/jdk17u-dev/pull/3335/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3335&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8280468
  Stats: 79 lines in 3 files changed: 34 ins; 28 del; 17 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3335.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3335/head:pull/3335

PR: https://git.openjdk.org/jdk17u-dev/pull/3335