fix count api bug when last step count in (degree, skipDegree)

[zhoney]

Change-Id: Ib5335b70b2b5ea03068e792a5486b16708f44364

[codecov]

Codecov Report

Merging #1042 into master will increase coverage by 0.50%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1042      +/-   ##
============================================
+ Coverage     68.58%   69.09%   +0.50%     
- Complexity     5401     5422      +21     
============================================
  Files           329      329              
  Lines         26394    26394              
  Branches       3761     3761              
============================================
+ Hits          18102    18236     +134     
+ Misses         6512     6372     -140     
- Partials       1780     1786       +6     

Impacted Files	Coverage Δ	Complexity Δ
...a/com/baidu/hugegraph/api/schema/EdgeLabelAPI.java	56.94% <ø> (ø)	0.00 <0.00> (ø)
...com/baidu/hugegraph/api/schema/VertexLabelAPI.java	58.57% <ø> (ø)	0.00 <0.00> (ø)
...a/com/baidu/hugegraph/backend/query/Condition.java	77.57% <0.00%> (-0.37%)	32.00% <0.00%> (ø%)
...om/baidu/hugegraph/task/StandardTaskScheduler.java	85.26% <0.00%> (-0.36%)	67.00% <0.00%> (ø%)
...c/main/java/com/baidu/hugegraph/task/HugeTask.java	69.76% <0.00%> (-0.34%)	69.00% <0.00%> (-1.00%)
...du/hugegraph/backend/tx/GraphIndexTransaction.java	79.85% <0.00%> (ø)	193.00% <0.00%> (+1.00%)
.../baidu/hugegraph/backend/query/ConditionQuery.java	86.20% <0.00%> (+0.43%)	101.00% <0.00%> (+1.00%)
.../backend/store/cassandra/CassandraSessionPool.java	57.14% <0.00%> (+1.02%)	11.00% <0.00%> (ø%)
...h/backend/store/scylladb/ScyllaDBTablesWithMV.java	96.03% <0.00%> (+96.03%)	10.00% <0.00%> (+10.00%)
...graph/backend/store/scylladb/ScyllaDBFeatures.java	100.00% <0.00%> (+100.00%)	3.00% <0.00%> (+3.00%)
... and 1 more

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