Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java b/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
index 351d1a1..4ce1610 100644
--- a/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
+++ b/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
@@ -4,6 +4,7 @@
 // Not sure if we really need this base class.
 // Just copied hierarchy from RAMCloud.
 //
+
 /**
  * Base exception class for conditional write, etc. failure.
  */