[code-reflection] Integrated: Fixed env.bash issue found on Linux (Mac ok?)

[Gary Frost]

`env.bash` issue found on Ubuntu/Jetson

Apparently bash does not like empty `then` in `if cmd;then...else....fi`

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Commit messages:
 - Fixed env.bash issue found on Linux (Mac ok?)

Changes: https://git.openjdk.org/babylon/pull/267/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=267&range=00
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/babylon/pull/267.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/267/head:pull/267

PR: https://git.openjdk.org/babylon/pull/267