code cleaning

Author: CodingCat

repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala

@@ -183,7 +183,7 @@ class SparkILoop(in0: Option[BufferedReader], protected val out: JPrintWriter,
   /** Create a new interpreter. */
   def createInterpreter() {
     if (settings != null) {
-      if (addedClasspath != "") settings.classpath append addedClasspath
+      if (addedClasspath != "") settings.classpath.append(addedClasspath)
 
       // work around for Scala bug
       val totalClassPath = SparkILoop.getAddedJars.foldLeft(