RFR: 7910: Fix spotless finding after JMC-7903

[Christoph Langer]

The commit for JMC-7903 violated spotless rules by not having a line break at the end of the file.

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Commit messages:
 - Try to fix spotless issue with FastAccessNumberMap after JMC-7903

Changes: https://git.openjdk.org/jmc/pull/433/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=433&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-7910
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jmc/pull/433.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/433/head:pull/433

PR: https://git.openjdk.org/jmc/pull/433