make refcount atomic

[sundb]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 94.61538% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.32%. Comparing base (319153f) to head (8cce967).

Files with missing lines	Patch %	Lines
src/networking.c	50.00%	5 Missing ⚠️
src/debug.c	50.00%	1 Missing ⚠️
src/object.c	97.72%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable     #440      +/-   ##
============================================
+ Coverage     75.96%   76.32%   +0.35%     
============================================
  Files           138      138              
  Lines         79433    79359      -74     
============================================
+ Hits          60342    60571     +229     
+ Misses        19091    18788     -303     

Files with missing lines	Coverage Δ
src/aof.c	82.34% <100.00%> (-0.21%)	⬇️
src/cluster.c	78.04% <100.00%> (ø)
src/cluster_asm.c	92.82% <100.00%> (ø)
src/db.c	93.58% <100.00%> (+0.11%)	⬆️
src/defrag.c	92.00% <100.00%> (ø)
src/iothread.c	89.28% <ø> (-0.11%)	⬇️
src/keymeta.c	93.03% <100.00%> (+0.16%)	⬆️
src/keymeta.h	100.00% <100.00%> (ø)
src/lazyfree.c	90.97% <100.00%> (+20.29%)	⬆️
src/module.c	83.03% <100.00%> (+0.05%)	⬆️
... and 10 more

... and 19 files with indirect coverage changes

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