fix: unify additional debug output

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (aaefca7) 59.84% compared to head (c4634b1) 60.00%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1050 +/- ## ========================================== + Coverage 59.84% 60.00% +0.15% ========================================== Files 19 19 Lines 2570 2580 +10 Branches 913 913 ========================================== + Hits 1538 1548 +10 + Misses 692 690 -2 - Partials 340 342 +2 ``` | [Files](https://app.codecov.io/gh/google/glog/pull/1050?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=google) | Coverage Δ | | |---|---|---| | [src/logging.cc](https://app.codecov.io/gh/google/glog/pull/1050?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=google#diff-c3JjL2xvZ2dpbmcuY2M=) | `67.42% <100.00%> (+0.12%)` | :arrow_up: | | [src/utilities.cc](https://app.codecov.io/gh/google/glog/pull/1050?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=google#diff-c3JjL3V0aWxpdGllcy5jYw==) | `71.96% <100.00%> (+1.37%)` | :arrow_up: | | [src/utilities.h](https://app.codecov.io/gh/google/glog/pull/1050?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=google#diff-c3JjL3V0aWxpdGllcy5o) | `100.00% <ø> (ø)` | |