fixed a scala style error.

Author: zhangjiajin

mllib/src/test/scala/org/apache/spark/mllib/fpm/PrefixSpanSuite.scala

@@ -114,17 +114,17 @@ class PrefixSpanSuite extends SparkFunSuite with MLlibTestSparkContext {
     val result = prefixspan.run(rdd)
     val expectedValue = Array(
       (Array(1), 4L),
-      (Array(1,-1, 6), 2L),
-      (Array(1,-1, 1), 2L),
-      (Array(1,-1, 3), 4L),
-      (Array(1,-1, 3, -1, 1), 2L),
-      (Array(1,-1, 3, -1, 3), 3L),
-      (Array(1,-1, 3, -1, 2), 3L),
-      (Array(1,-1, 2), 4L),
-      (Array(1,-1, 2, -1, 1), 2L),
-      (Array(1,-1, 2, -1, 3), 2L),
-      (Array(1,-1, 2, 3), 2L),
-      (Array(1,-1, 2, 3, -1, 1), 2L),
+      (Array(1, -1, 6), 2L),
+      (Array(1, -1, 1), 2L),
+      (Array(1, -1, 3), 4L),
+      (Array(1, -1, 3, -1, 1), 2L),
+      (Array(1, -1, 3, -1, 3), 3L),
+      (Array(1, -1, 3, -1, 2), 3L),
+      (Array(1, -1, 2), 4L),
+      (Array(1, -1, 2, -1, 1), 2L),
+      (Array(1, -1, 2, -1, 3), 2L),
+      (Array(1, -1, 2, 3), 2L),
+      (Array(1, -1, 2, 3, -1, 1), 2L),
       (Array(1, 2), 2L),
       (Array(1, 2, -1, 6), 2L),
       (Array(1, 2, -1, 3), 2L),