RFR: JDK-8296969: C1: PrintC1Statistics is broken after JDK-8292878

[Joshua Cao]

Issue is coming from https://bugs.openjdk.org/browse/JDK-8292878. This PR adds the `rscratch1` argument to the affected `incrementl` call.

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Commit messages:
 - 8296969: -XX:+PrintC1Statistics is broken

Changes: https://git.openjdk.org/jdk/pull/11170/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11170&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296969
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/11170.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11170/head:pull/11170

PR: https://git.openjdk.org/jdk/pull/11170