[jdk17u-dev] RFR: 8318951: Additional negative value check in JPEG decoding

[Goetz Lindenmaier]

I backport this for parity with 17.0.11-oracle.

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Commit messages:
 - Backport 75ce02fe74e1232bfa8d72b4fdad82ed938ef957

Changes: https://git.openjdk.org/jdk17u-dev/pull/1999/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1999&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318951
  Stats: 8 lines in 2 files changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1999.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1999/head:pull/1999

PR: https://git.openjdk.org/jdk17u-dev/pull/1999