Fix agg memory leak

[acquamarin]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01% ⚠️

Comparison is base (657a830) 91.30% compared to head (366187a) 91.30%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1859      +/-   ##
==========================================
- Coverage   91.30%   91.30%   -0.01%     
==========================================
  Files         798      798              
  Lines       28999    28996       -3     
==========================================
- Hits        26478    26475       -3     
  Misses       2521     2521              

Files Changed	Coverage Δ
src/common/vector/value_vector.cpp	100.00% <ø> (ø)
src/include/function/aggregate/collect.h	89.79% <ø> (ø)
...rocessor/operator/aggregate/aggregate_hash_table.h	81.81% <ø> (ø)
...cessor/operator/aggregate/aggregate_hash_table.cpp	83.14% <ø> (+0.12%)	⬆️
src/include/function/aggregate/min_max.h	91.11% <100.00%> (-0.20%)	⬇️
src/include/processor/operator/base_hash_table.h	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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