Direct Accessing d_boxes in PatchLevel

PatchLevel.C: Line 452 and 618: d_boxes are directly accessed, it can be uninitialized when accessing, e.x. if you are from a restart, ranges of boxes in d_boxes are read boxes are not initialized.
Use PatchLevel::getBoxes() instead.

Open PatchLevel.C and inspect the direct d_boxes accesses at lines 452 and 618, then read PatchLevel::getBoxes() to understand the intended access path. Check the restart scenario described in the issue and confirm both accesses use getBoxes() so uninitialized box ranges are not read.

Written by the indexing model from the issue text.