Fixed missing this -> wrong semantics

[pierresouchay]

Fixed simple missing this that cause not assigned type member

[codecov-io]

Codecov Report

Merging #232 into dev will increase coverage by 0.33%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##                dev     #232      +/-   ##
============================================
+ Coverage     33.35%   33.68%   +0.33%     
- Complexity     1486     1511      +25     
============================================
  Files            97       97              
  Lines         23569    23571       +2     
  Branches       3909     3910       +1     
============================================
+ Hits           7862     7941      +79     
+ Misses        14141    14063      -78     
- Partials       1566     1567       +1

Flag	Coverage Δ	Complexity Δ
#JDBC41	33.48% <0%> (+0.19%)	1495 <0> (+12)	⬆️
#JDBC42	33.59% <0%> (+0.34%)	1507 <0> (+28)	⬆️

Impacted Files	Coverage Δ	Complexity Δ
...va/com/microsoft/sqlserver/jdbc/SQLServerBlob.java	26.31% <0%> (-0.28%)	13 <0> (ø)
...om/microsoft/sqlserver/jdbc/SQLServerBulkCopy.java	44.69% <0%> (-0.22%)	181% <0%> (-2%)
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	29.43% <0%> (+0.34%)	84% <0%> (+1%)	⬆️
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	37.33% <0%> (+0.38%)	0% <0%> (ø)	⬇️
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	34.58% <0%> (+0.61%)	0% <0%> (ø)	⬇️
...n/java/com/microsoft/sqlserver/jdbc/DataTypes.java	69.86% <0%> (+0.84%)	5% <0%> (+2%)	⬆️
...n/java/com/microsoft/sqlserver/jdbc/Parameter.java	30.47% <0%> (+0.85%)	36% <0%> (ø)	⬇️
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	24.86% <0%> (+1.22%)	179% <0%> (+10%)	⬆️
...main/java/com/microsoft/sqlserver/jdbc/Column.java	33.12% <0%> (+1.25%)	32% <0%> (+2%)	⬆️
...om/microsoft/sqlserver/jdbc/SimpleInputStream.java	41.91% <0%> (+1.47%)	10% <0%> (+1%)	⬆️
... and 4 more

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[AfsanehR-zz]

Thank you @pierresouchay for the pull request!