[v2.12]fixbug:heap use after free

[ZhouBox]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 22.59%. Comparing base (54c5856) to head (3626877).

Files with missing lines	Patch %	Lines
src/base/group.c	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (54c5856) and HEAD (3626877). Click for more details.

HEAD has 5 uploads less than BASE

Flag	BASE (54c5856)	HEAD (3626877)
	7	2

Additional details and impacted files

@@             Coverage Diff             @@
##            v2.12    #2698       +/-   ##
===========================================
- Coverage   65.44%   22.59%   -42.85%     
===========================================
  Files         121      105       -16     
  Lines       27785    22593     -5192     
===========================================
- Hits        18183     5105    -13078     
- Misses       9602    17488     +7886     

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