fix: fix gc coredump

[dl239]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• What is the current behavior? (You can also link to an open issue here)

• What is the new behavior (if this is a feature change)?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9190ecf) 75.25% compared to head (8f0891e) 75.33%.
Report is 19 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3561      +/-   ##
============================================
+ Coverage     75.25%   75.33%   +0.07%     
  Complexity      587      587              
============================================
  Files           701      718      +17     
  Lines        129041   129842     +801     
  Branches       1280     1280              
============================================
+ Hits          97115    97821     +706     
- Misses        31640    31735      +95     
  Partials        286      286              

Files	Coverage Δ
src/storage/mem_table.cc	88.24% <100.00%> (-0.69%)	⬇️
src/storage/snapshot_test.cc	99.80% <100.00%> (+<0.01%)	⬆️

... and 58 files with indirect coverage changes

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