Fix union tag bug

[acquamarin]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (c90fb84) 89.90% compared to head (c31422c) 89.90%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1936   +/-   ##
=======================================
  Coverage   89.90%   89.90%           
=======================================
  Files         873      873           
  Lines       31714    31714           
=======================================
  Hits        28512    28512           
  Misses       3202     3202           

Files Changed	Coverage Δ
src/common/vector/value_vector.cpp	99.45% <100.00%> (ø)

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