Fix | Removed populating Lobs when calling wasNull()

[rene-ye]

wasNull() does not actually move the cursor, and it's unnecessary to populate the active lob objects when it's called. Addresses #867.

[codecov-io]

Codecov Report

Merging #875 into dev will decrease coverage by 0.29%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##                dev     #875     +/-   ##
===========================================
- Coverage     48.98%   48.68%   -0.3%     
+ Complexity     2821     2795     -26     
===========================================
  Files           116      116             
  Lines         27877    27876      -1     
  Branches       4650     4650             
===========================================
- Hits          13655    13571     -84     
+ Misses        12104    12098      -6     
- Partials       2118     2207     +89

Flag	Coverage Δ	Complexity Δ
#JDBC42	48.2% <ø> (+0.02%)	2753 <ø> (+3)	⬆️
#JDBC43	48.52% <ø> (-0.4%)	2790 <ø> (-26)

Impacted Files	Coverage Δ	Complexity Δ
...m/microsoft/sqlserver/jdbc/SQLServerResultSet.java	32.66% <ø> (+0.2%)	255 <0> (+2)	⬆️
...in/java/com/microsoft/sqlserver/jdbc/IOBuffer.java	56.2% <0%> (-2.04%)	0% <0%> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerException.java	77.44% <0%> (-1.51%)	31% <0%> (-2%)
...n/java/com/microsoft/sqlserver/jdbc/tdsparser.java	68.1% <0%> (-0.87%)	0% <0%> (ø)
...c/main/java/com/microsoft/sqlserver/jdbc/Util.java	61.42% <0%> (-0.65%)	90% <0%> (-3%)
...ncurrentlinkedhashmap/ConcurrentLinkedHashMap.java	38.14% <0%> (-0.65%)	42% <0%> (-1%)
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	48.09% <0%> (-0.54%)	335% <0%> (-15%)
...m/microsoft/sqlserver/jdbc/SQLServerStatement.java	59.57% <0%> (-0.29%)	135% <0%> (-6%)
...rc/main/java/com/microsoft/sqlserver/jdbc/dtv.java	62.45% <0%> (-0.12%)	0% <0%> (ø)
...rc/main/java/com/microsoft/sqlserver/jdbc/DDC.java	45.73% <0%> (ø)	107% <0%> (-1%)	⬇️
... and 2 more

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