[lworld] RFR: 8350444: Check for verifer error in StackMapReader::check_offset()

[Matias Saavedra Silva]

This patch upstreams a change from mainline that is needed to implement strict fields. 
Originally reviewed-by: coleenp, dholmes

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Commit messages:
 - 8350444: Check for verifer error in StackMapReader::check_offset()

Changes: https://git.openjdk.org/valhalla/pull/1372/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1372&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8350444
  Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1372.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1372/head:pull/1372

PR: https://git.openjdk.org/valhalla/pull/1372