git: openjdk/shenandoah-visualizer: master: Minor cleanups after code inspection

[duke]

Changeset: bc55c9c0
Author:    Aleksey Shipilev <shade at redhat.com>
Date:      2020-11-18 11:18:14 +0000
URL:       https://github.com/openjdk/shenandoah-visualizer/commit/bc55c9c0

Minor cleanups after code inspection

! src/main/java/org/openjdk/shenandoah/DataProvider.java
! src/main/java/org/openjdk/shenandoah/RegionStat.java
! src/main/java/org/openjdk/shenandoah/ShenandoahVisualizer.java