[lworld] RFR: 8378186: [lworld] Assign default values and minor cleanup [v3]

[Dan Heidinga]

> This provides a default value for some locals so it's obvious they are always set and does some minor cleanup.

Dan Heidinga has updated the pull request incrementally with one additional commit since the last revision:

  Fix comment style

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/2130/files
  - new: https://git.openjdk.org/valhalla/pull/2130/files/a2b8ae62..e2653117

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=2130&range=02
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=2130&range=01-02

  Stats: 5 lines in 1 file changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/valhalla/pull/2130.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2130/head:pull/2130

PR: https://git.openjdk.org/valhalla/pull/2130