RFR: 8335589: Fix -Wzero-as-null-pointer-constant warnings in IdealLoopTree ctor

[Tobias Hartmann]

On Wed, 3 Jul 2024 04:38:55 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this trivial change to the IdealLoopTree constructor. The
> initial values for some pointer-typed data members are changed from 0 to
> nullptr. This removes ~275 -Wzero-as-null-pointer-constant when that warning
> is enabled.
> 
> Testing: mach5 tier1

Looks good and trivial.

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Marked as reviewed by thartmann (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19995#pullrequestreview-2155487766