RFR: 8255578: [JVMCI] be more careful about reflective reads of Class.componentType.

[Tom Rodriguez]

cc @vnkozlov

-------------

Commit messages:
 - 8255578: [JVMCI] be more careful about reflective reads of Class.componentType.

Changes: https://git.openjdk.java.net/jdk/pull/962/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=962&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255578
  Stats: 25 lines in 3 files changed: 25 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/962.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/962/head:pull/962

PR: https://git.openjdk.java.net/jdk/pull/962