RFR: 8283834: Unmappable character for US-ASCII encoding in TestPredicateInputBelowLoopPredicate

[Tobias Hartmann]

Trivial fix that replaces the non-ascii character `\ufffd\ufffd2` by `C`.

Thanks,
Tobias

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Commit messages:
 - 8283834: Unmappable character for US-ASCII encoding in TestPredicateInputBelowLoopPredicate

Changes: https://git.openjdk.java.net/jdk/pull/8011/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8011&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283834
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8011.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8011/head:pull/8011

PR: https://git.openjdk.java.net/jdk/pull/8011