Fixed issue with throwing error message for unsupported datatype.

[AfsanehR-zz]

Fixes #449

[codecov-io]

Codecov Report

Merging #450 into dev will decrease coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##                dev     #450      +/-   ##
============================================
- Coverage     46.33%   46.32%   -0.01%     
+ Complexity     2200     2199       -1     
============================================
  Files           108      108              
  Lines         25266    25266              
  Branches       4177     4176       -1     
============================================
- Hits          11706    11705       -1     
+ Misses        11534    11530       -4     
- Partials       2026     2031       +5

Flag	Coverage Δ	Complexity Δ
#JDBC41	46.12% <100%> (ø)	2188 <0> (+1)	⬆️
#JDBC42	46.2% <100%> (+0.04%)	2195 <0> (+2)	⬆️

Impacted Files	Coverage Δ	Complexity Δ
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	42.69% <ø> (-2.03%)	103 <0> (-1)
...om/microsoft/sqlserver/jdbc/SQLServerResource.java	100% <ø> (ø)	4 <0> (ø)	⬇️
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	63.43% <100%> (+0.12%)	0 <0> (ø)	⬇️
...om/microsoft/sqlserver/jdbc/SQLServerBulkCopy.java	52.48% <0%> (-0.07%)	240% <0%> (ø)
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	53.98% <0%> (-0.04%)	0% <0%> (ø)
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	50.82% <0%> (+0.24%)	161% <0%> (ø)	⬇️
...n/java/com/microsoft/sqlserver/jdbc/Parameter.java	63.51% <0%> (+0.64%)	62% <0%> (ø)	⬇️
...om/microsoft/sqlserver/jdbc/ReaderInputStream.java	47.19% <0%> (+2.24%)	16% <0%> (ø)	⬇️

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