fix ConfigUtil.java CodeQL

[z7658329]

No description provided.

[codecov]

Codecov Report

Merging #2021 (4ea14c9) into master (109495e) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #2021      +/-   ##
============================================
- Coverage     66.36%   66.36%   -0.01%     
+ Complexity      978      976       -2     
============================================
  Files           482      482              
  Lines         41457    41459       +2     
  Branches       5890     5890              
============================================
- Hits          27515    27514       -1     
- Misses        11242    11248       +6     
+ Partials       2700     2697       -3     

Impacted Files	Coverage Δ
...main/java/com/baidu/hugegraph/util/ConfigUtil.java	31.66% <0.00%> (-1.10%)	⬇️
.../hugegraph/backend/store/rocksdb/RocksDBTable.java	67.11% <0.00%> (-2.02%)	⬇️
...ugegraph/backend/store/raft/StoreStateMachine.java	64.86% <0.00%> (-0.91%)	⬇️
...hugegraph/backend/store/raft/rpc/RaftRequests.java	18.78% <0.00%> (-0.24%)	⬇️
...hugegraph/backend/store/raft/rpc/RpcForwarder.java	69.49% <0.00%> (ø)
...va/com/baidu/hugegraph/backend/cache/RamCache.java	73.48% <0.00%> (+0.55%)	⬆️
...va/com/baidu/hugegraph/util/collection/IntSet.java	75.00% <0.00%> (+1.27%)	⬆️
...u/hugegraph/backend/tx/SchemaIndexTransaction.java	79.54% <0.00%> (+6.81%)	⬆️

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[z7658329]

see #2022