Fixes codacy errors.

[sighingnow]

See issues: https://app.codacy.com/gh/v6d-io/v6d/issues

[codecov]

Codecov Report

Merging #283 (2a96fd7) into main (3b9ae8c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 2a96fd7 differs from pull request most recent head 8e8ea30. Consider uploading reports for the commit 8e8ea30 to get more accurate results

@@           Coverage Diff           @@
##             main     #283   +/-   ##
=======================================
  Coverage   75.96%   75.97%           
=======================================
  Files          60       60           
  Lines        4997     4998    +1     
=======================================
+ Hits         3796     3797    +1     
  Misses       1201     1201           

Impacted Files	Coverage Δ
src/server/memory/malloc.cc	73.33% <100.00%> (+0.91%)	⬆️