Fix | Fix decrypt failure to drain data (#2618)

Author: arellegue

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/TdsParser.cs

@@ -6140,6 +6140,12 @@ internal bool TryReadSqlValue(SqlBuffer value, SqlMetaDataPriv md, int length, T
                                 // call to decrypt column keys has failed. The data wont be decrypted.
                                 // Not setting the value to false, forces the driver to look for column value.
                                 // Packet received from Key Vault will throws invalid token header.
+                                if (stateObj.HasPendingData)
+                                {
+                                    // Drain the pending data now if setting the HasPendingData to false.
+                                    // SqlDataReader.TryCloseInternal can not drain if HasPendingData = false.
+                                    DrainData(stateObj);
+                                }
                                 stateObj.HasPendingData = false;
                             }
                             throw SQL.ColumnDecryptionFailed(columnName, null, e);

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/TdsParser.cs

@@ -6935,6 +6935,12 @@ internal bool TryReadSqlValue(SqlBuffer value,
                                 // call to decrypt column keys has failed. The data wont be decrypted.
                                 // Not setting the value to false, forces the driver to look for column value.
                                 // Packet received from Key Vault will throws invalid token header.
+                                if (stateObj.HasPendingData)
+                                {
+                                    // Drain the pending data now if setting the HasPendingData to false.
+                                    // SqlDataReader.TryCloseInternal can not drain if HasPendingData = false.
+                                    DrainData(stateObj);
+                                }
                                 stateObj.HasPendingData = false;
                             }
                             throw SQL.ColumnDecryptionFailed(columnName, null, e);