Minor code style fixes

Author: rozza

bson/src/main/scala/org/mongodb/scala/bson/codecs/IterableCodec.scala

@@ -60,7 +60,7 @@ case class IterableCodec(registry: CodecRegistry, bsonTypeClassMap: BsonTypeClas
  override def getEncoderClass: Class[Iterable[_]] = classOf[Iterable[_]]
 
  @SuppressWarnings(Array("unchecked", "rawtypes"))
- private def writeValue[T](writer: BsonWriter, encoderContext: EncoderContext, value: T) {
+ private def writeValue[T](writer: BsonWriter, encoderContext: EncoderContext, value: T): Unit = {
  value match {
  case isNull if value == null => writer.writeNull() // scalastyle:ignore
  case map: Map[_, _] =>
@@ -73,7 +73,7 @@ case class IterableCodec(registry: CodecRegistry, bsonTypeClassMap: BsonTypeClas
  }
  }
 
- private def writeMap(writer: BsonWriter, map: Map[String, Any], encoderContext: EncoderContext) {
+ private def writeMap(writer: BsonWriter, map: Map[String, Any], encoderContext: EncoderContext): Unit = {
  writer.writeStartDocument()
  map.foreach(kv => {
  writer.writeName(kv._1)
@@ -82,7 +82,7 @@ case class IterableCodec(registry: CodecRegistry, bsonTypeClassMap: BsonTypeClas
  writer.writeEndDocument()
  }
 
- private def writeIterable(writer: BsonWriter, list: Iterable[_], encoderContext: EncoderContext) {
+ private def writeIterable(writer: BsonWriter, list: Iterable[_], encoderContext: EncoderContext): Unit = {
  writer.writeStartArray()
  list.foreach(value => writeValue(writer, encoderContext, value))
  writer.writeEndArray()

driver/src/it/scala/org/mongodb/scala/gridfs/GridFSSpec.scala

@@ -116,7 +116,7 @@ class GridFSSpec extends RequiresMongoDBISpec with FuturesSpec {
  }
  // scalastyle:on cyclomatic.complexity
 
- private def actionGridFS(action: BsonDocument, assertion: BsonDocument) {
+ private def actionGridFS(action: BsonDocument, assertion: BsonDocument): Unit = {
  if (!action.isEmpty) {
  action.getString("operation").getValue match {
  case "delete" => doDelete(action.getDocument("arguments"), assertion)
@@ -128,7 +128,7 @@ class GridFSSpec extends RequiresMongoDBISpec with FuturesSpec {
  }
  }
 
- private def doDelete(arguments: BsonDocument, assertion: BsonDocument) {
+ private def doDelete(arguments: BsonDocument, assertion: BsonDocument): Unit = {
  val result = Try(gridFSBucket.map(_.delete(arguments.getObjectId("id").getValue)).get.futureValue)
  assertion.containsKey("error") match {
  case true => result should be a Symbol("failure")
@@ -168,7 +168,7 @@ class GridFSSpec extends RequiresMongoDBISpec with FuturesSpec {
  }
  }
 
- private def doDownloadByName(arguments: BsonDocument, assertion: BsonDocument) {
+ private def doDownloadByName(arguments: BsonDocument, assertion: BsonDocument): Unit = {
  val outputStream: ByteArrayOutputStream = new ByteArrayOutputStream
  val options: GridFSDownloadOptions = new GridFSDownloadOptions()
  Option(arguments.get("options")).map(opts => options.revision(opts.asDocument().getInt32("revision").getValue))
@@ -187,7 +187,7 @@ class GridFSSpec extends RequiresMongoDBISpec with FuturesSpec {
  }
 
  //scalastyle:off method.length
- private def doUpload(rawArguments: BsonDocument, assertion: BsonDocument) {
+ private def doUpload(rawArguments: BsonDocument, assertion: BsonDocument): Unit = {
 
  val arguments: BsonDocument = parseHexDocument(rawArguments, "source")