Fix small inconsistency between netcore and netfx

[David-Engel]

One-line change. Netcore implementation is already correct.

[codecov]

Codecov Report

Merging #1672 (0a30f56) into main (8682741) will decrease coverage by 0.12%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #1672      +/-   ##
==========================================
- Coverage   71.44%   71.32%   -0.13%     
==========================================
  Files         291      291              
  Lines       61241    61241              
==========================================
- Hits        43756    43680      -76     
- Misses      17485    17561      +76     

Flag	Coverage Δ
addons	92.38% <ø> (ø)
netcore	74.91% <ø> (-0.11%)	⬇️
netfx	69.14% <0.00%> (-0.10%)	⬇️

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Impacted Files	Coverage Δ
...nt/netfx/src/Microsoft/Data/SqlClient/TdsParser.cs	70.91% <0.00%> (-0.08%)	⬇️
...ata/SqlClient/SqlConnectionTimeoutErrorInternal.cs	30.35% <0.00%> (-11.61%)	⬇️
...src/Microsoft/Data/SqlClient/SqlMetadataFactory.cs	81.66% <0.00%> (-10.84%)	⬇️
...ActiveDirectoryAuthenticationTimeoutRetryHelper.cs	56.81% <0.00%> (-6.82%)	⬇️
.../src/Microsoft/Data/SqlClient/SNI/SNIMarsHandle.cs	87.89% <0.00%> (-4.49%)	⬇️
...crosoft/Data/ProviderBase/DbReferenceCollection.cs	92.63% <0.00%> (-3.16%)	⬇️
...e/src/Microsoft/Data/SqlClient/SNI/SNITcpHandle.cs	60.62% <0.00%> (-2.34%)	⬇️
...rc/Microsoft/Data/ProviderBase/DbConnectionPool.cs	85.48% <0.00%> (-0.59%)	⬇️
...c/Microsoft/Data/SqlClient/TdsParserStateObject.cs	81.36% <0.00%> (-0.51%)	⬇️
...crosoft/Data/SqlClient/SqlInternalConnectionTds.cs	72.88% <0.00%> (-0.40%)	⬇️
... and 9 more

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