SPARK-1438 fix spacing issue

Author: arun-rama

core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala

@@ -465,8 +465,8 @@ class RDDSuite extends FunSuite with SharedSparkContext {
 
   test("takeSample") {
     val data = sc.parallelize(1 to 100, 2)
-
-    	for (num <- List(5,20,100)) {
+    
+    for (num <- List(5,20,100)) {
     	  val sample = data.takeSample(withReplacement=false, num=num)
       assert(sample.size === num)        // Got exactly num elements
       assert(sample.toSet.size === num)  // Elements are distinct