RFR: 8259713: Fix comments and ResetNoHandleMark in deoptimization

[Lois Foltan]

On Wed, 13 Jan 2021 21:12:34 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This is a small part of the withdrawn change for https://github.com/openjdk/jdk/pull/1990 to fix the out-of-date comments in deoptimization.cpp.
> Tested with tier1-3.

LGTM.
Lois

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

Marked as reviewed by lfoltan (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2069