reverse line removal

Author: bomeng

sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala

@@ -497,7 +497,7 @@ final class DataFrameWriter private[sql](df: DataFrame) {
     // connectionProperties should override settings in extraOptions
     props.putAll(connectionProperties)
     val conn = JdbcUtils.createConnectionFactory(url, props)()
-    
+
     try {
       var tableExists = JdbcUtils.tableExists(conn, url, table)