Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/topology/Path.java b/src/main/java/net/onrc/onos/core/topology/Path.java
index 1d15fc7..9c5118d 100644
--- a/src/main/java/net/onrc/onos/core/topology/Path.java
+++ b/src/main/java/net/onrc/onos/core/topology/Path.java
@@ -5,20 +5,21 @@
 
 /**
  * Base class for Path representation
+ *
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class Path extends LinkedList<LinkEvent> {
-	private static final long serialVersionUID = 7127274096495173415L;
+    private static final long serialVersionUID = 7127274096495173415L;
 
-	@Override
-	public String toString() {
-		StringBuilder builder = new StringBuilder();
-		Iterator<LinkEvent> i = this.iterator();
-		while (i.hasNext()) {
-			builder.append(i.next().toString());
-			if (i.hasNext())
-				builder.append(", ");
-		}
-		return builder.toString();
-	}
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        Iterator<LinkEvent> i = this.iterator();
+        while (i.hasNext()) {
+            builder.append(i.next().toString());
+            if (i.hasNext())
+                builder.append(", ");
+        }
+        return builder.toString();
+    }
 }