[foreign-jextract] RFR: updating samples for recent MemoryAccess changes.

[Athijegannathan Sundararajan]

updating samples for recent MemoryAccess changes.

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Commit messages:
 - updating samples for recent MemoryAccess changes.

Changes: https://git.openjdk.java.net/panama-foreign/pull/236/files
 Webrev: https://webrevs.openjdk.java.net/panama-foreign/236/webrev.00
  Stats: 189 lines in 2 files changed: 1 ins; 33 del; 155 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/236.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/236/head:pull/236

PR: https://git.openjdk.java.net/panama-foreign/pull/236