[bugfix] Fix HaloCatalog progress bar

[brittonsmith]

The HaloCatalog progress bar had an unnecessary update call and was missing a finish call.

[codecov-io]

Codecov Report

Merging #40 into master will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #40      +/-   ##
==========================================
- Coverage   65.36%   65.28%   -0.08%     
==========================================
  Files          24       24              
  Lines        1305     1305              
==========================================
- Hits          853      852       -1     
- Misses        452      453       +1

Impacted Files	Coverage Δ
tests/test_flake8.py	88.23% <0%> (-5.89%)	⬇️

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[brittonsmith]

This is a fairly simple PR. Any objections to merging?