[Chapel Merge] With fresh eyes, did a slight cleanup on pidigits

Branch: refs/heads/main
Revision: 6702b17
Author: bradcray
Link: https://github.com/chapel-lang/chapel/pull/19166
Log Message:

Merge pull request #19166 from bradcray/pidigits-formatting

With fresh eyes, did a slight cleanup on pidigits to prep for perf meeting

[trivial, not reviewed]

Renamed a (safe, but potentially confusing) reuse of an identifier and made spacing
between procs consistent.

Modified Files:
M test/studies/shootout/pidigits/bradc/pidigits-blc.chpl

Compare: https://github.com/chapel-lang/chapel/compare/cd6c8d345f63...6702b173cfc8