[jfx11u] RFR: 8267314: Loading some animated GIFs fails with ArrayIndexOutOfBoundsException: Index 4096 out of bounds for length 4096

[Johan Vos]

…xception: Index 4096 out of bounds for length 4096

Reviewed-by: kcr, arapte

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Commit messages:
 - 8267314: Loading some animated GIFs fails with ArrayIndexOutOfBoundsException: Index 4096 out of bounds for length 4096

Changes: https://git.openjdk.java.net/jfx11u/pull/25/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=25&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267314
  Stats: 130 lines in 2 files changed: 118 ins; 1 del; 11 mod
  Patch: https://git.openjdk.java.net/jfx11u/pull/25.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/25/head:pull/25

PR: https://git.openjdk.java.net/jfx11u/pull/25