fix: Requested permits (0) must be positive

[javeme]

Change-Id: I43ab6b0614e86464f2ce9824fda63df1f6dbd2f9
fix: #760

[codecov]

Codecov Report

Merging #773 into master will decrease coverage by 0.02%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master     #773      +/-   ##
============================================
- Coverage     71.21%   71.19%   -0.03%     
+ Complexity     4347     4346       -1     
============================================
  Files           282      282              
  Lines         20807    20806       -1     
  Branches       2930     2930              
============================================
- Hits          14818    14813       -5     
- Misses         4541     4543       +2     
- Partials       1448     1450       +2

Impacted Files	Coverage Δ	Complexity Δ
...aidu/hugegraph/backend/tx/AbstractTransaction.java	72.26% <0%> (+0.52%)	42 <0> (ø)	⬇️
...ugegraph/backend/store/memory/InMemoryDBTable.java	82.29% <0%> (-1.05%)	39% <0%> (-1%)
...a/com/baidu/hugegraph/backend/query/Condition.java	78% <0%> (-0.42%)	31% <0%> (ø)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	80.58% <0%> (-0.4%)	179% <0%> (ø)

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