Fixed asan and lsan issues

[pratikmankawde]

Details to come.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.4%. Comparing base (0586b56) to head (b32a5f2).

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #6150     +/-   ##
=========================================
- Coverage     79.4%   79.4%   -0.0%     
=========================================
  Files          839     839             
  Lines        71619   71621      +2     
  Branches      8231    8231             
=========================================
+ Hits         56855   56856      +1     
- Misses       14764   14765      +1     

Files with missing lines	Coverage Δ
src/libxrpl/json/json_value.cpp	99.1% <100.0%> (ø)
src/libxrpl/net/HTTPClient.cpp	70.8% <100.0%> (+0.3%)	⬆️

... and 3 files with indirect coverage changes

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