Integrated: [type-classes] JDK-8377589: Improve spacing in PolynomialDouble

[Joe Darcy]

Small code cleanup.

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Commit messages:
 - JDK-8377589: Improve spacing in PolynomialDouble

Changes: https://git.openjdk.org/valhalla/pull/2074/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2074&range=00
  Stats: 4 lines in 1 file changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/valhalla/pull/2074.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2074/head:pull/2074

PR: https://git.openjdk.org/valhalla/pull/2074