[query] Fix namespace resolve debug log not being written with multiple namespaces

[robskillington]

What this PR does / why we need it:

Fixes checked debug log being reused, which is unsafe.

Special notes for your reviewer:

Does this PR introduce a user-facing and/or backwards incompatible change?:

NONE

Does this PR require updating code package or user-facing documentation?:

NONE

[codecov]

Codecov Report

Merging #2211 into master will increase coverage by 0.7%.
The diff coverage is 66.6%.

@@           Coverage Diff            @@
##           master   #2211     +/-   ##
========================================
+ Coverage    71.5%   72.2%   +0.7%     
========================================
  Files        1022    1022             
  Lines       88843   88794     -49     
========================================
+ Hits        63534   64178    +644     
+ Misses      21023   20317    -706     
- Partials     4286    4299     +13     

Flag	Coverage Δ
#aggregator	82.1% <ø> (-0.1%)	⬇️
#cluster	85.3% <ø> (ø)
#collector	82.8% <ø> (ø)
#dbnode	79.0% <ø> (+1.0%)	⬆️
#m3em	74.4% <ø> (+16.2%)	⬆️
#m3ninx	72.3% <ø> (ø)
#m3nsch	51.1% <ø> (ø)
#metrics	17.6% <ø> (ø)
#msg	74.9% <ø> (ø)
#query	68.6% <66.6%> (+0.1%)	⬆️
#x	83.2% <ø> (-0.1%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b60ce51...4c136d0. Read the comment docs.