RFR: 8367243: Format issues with dist dump debug output in PhaseGVN::dead_loop_check

Tue Sep 9 16:27:26 UTC 2025

The `#` option adds color to the terminal. But that only usually works on people's terminals, and not if it is piped to a file on the server. Hence, `#` is only really a debugging feature, and not one to report with in connection with `assert`s.

Simply removed the `#`, and fixed some braces and spaces.

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Commit messages:
 - JDK-8367243

Changes: https://git.openjdk.org/jdk/pull/27175/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27175&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367243
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27175.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27175/head:pull/27175

PR: https://git.openjdk.org/jdk/pull/27175