[jdk11u-dev] RFR: 8260576: Typo in compiler/runtime/safepoints/TestRegisterRestoring.java

[Goetz Lindenmaier]

I backport this for parity with 11.0.19-oracle.

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Commit messages:
 - Backport 54e7a642bba492198ffaca1bf7f39b890801825e

Changes: https://git.openjdk.org/jdk11u-dev/pull/1751/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1751&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8260576
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1751.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1751/head:pull/1751

PR: https://git.openjdk.org/jdk11u-dev/pull/1751