remove volatile keyword

[xiangyushawn]

for issue #191

[codecov-io]

Codecov Report

Merging #409 into dev will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##                dev     #409   +/-   ##
=========================================
  Coverage     44.98%   44.98%           
+ Complexity     2133     2130    -3     
=========================================
  Files           107      107           
  Lines         24661    24661           
  Branches       4102     4102           
=========================================
  Hits          11093    11093           
- Misses        11711    11712    +1     
+ Partials       1857     1856    -1

Flag	Coverage Δ	Complexity Δ
#JDBC41	44.78% <100%> (+0.02%)	2121 <0> (ø)	⬇️
#JDBC42	44.79% <100%> (-0.01%)	2122 <0> (-5)

Impacted Files	Coverage Δ	Complexity Δ
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	54.75% <100%> (+0.17%)	0 <0> (ø)	⬇️
...m/microsoft/sqlserver/jdbc/SQLServerException.java	76.42% <0%> (-1.63%)	29% <0%> (-1%)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	39.55% <0%> (-0.68%)	84% <0%> (-2%)
...c/main/java/com/microsoft/sqlserver/jdbc/Util.java	59.61% <0%> (-0.44%)	90% <0%> (-1%)
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	59.31% <0%> (-0.35%)	0% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerStatement.java	59.57% <0%> (-0.31%)	138% <0%> (-1%)
...ncurrentlinkedhashmap/ConcurrentLinkedHashMap.java	42.42% <0%> (-0.22%)	46% <0%> (-1%)
...n/java/com/microsoft/sqlserver/jdbc/DataTypes.java	77.23% <0%> (-0.17%)	4% <0%> (-1%)
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.41% <0%> (+0.36%)	248% <0%> (+5%)	⬆️
... and 2 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9f9e78e...cb696aa. Read the comment docs.