[AIRFLOW-6820] fixup! fix unbound variable

[potiuk]

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Issue link: AIRFLOW-6820

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[potiuk]

Quick fix for unbound variable

[potiuk]

I'll merge this now - this is a fixup to just merged commit with one variable set - to prevent people to get it with breeze (breeze was failing).

[codecov-io]

Codecov Report

Merging #7459 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #7459   +/-   ##
=======================================
  Coverage   86.62%   86.62%           
=======================================
  Files         878      878           
  Lines       41292    41292           
=======================================
  Hits        35770    35770           
  Misses       5522     5522

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