meta: fix snap not released if error occurs when dumping meta

[SandyXSD]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1669 (87b2953) into main (6f4200f) will increase coverage by 0.02%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main    #1669      +/-   ##
==========================================
+ Coverage   61.80%   61.83%   +0.02%     
==========================================
  Files         133      133              
  Lines       22607    22607              
==========================================
+ Hits        13973    13978       +5     
+ Misses       7074     7063      -11     
- Partials     1560     1566       +6     

Impacted Files	Coverage Δ
pkg/meta/tkv.go	76.62% <0.00%> (-0.06%)	⬇️
pkg/meta/redis.go	73.04% <100.00%> (ø)
pkg/meta/sql.go	67.18% <100.00%> (-0.21%)	⬇️
pkg/vfs/reader.go	84.67% <0.00%> (-1.28%)	⬇️
pkg/chunk/cached_store.go	77.51% <0.00%> (-1.20%)	⬇️
pkg/object/object_storage.go	76.78% <0.00%> (ø)
pkg/sync/sync.go	44.99% <0.00%> (+0.54%)	⬆️
pkg/sync/cluster.go	41.78% <0.00%> (+9.85%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 084b7e0...87b2953. Read the comment docs.