Checkstyle fixes for tests

- Fixed some checkstyle errors which seemed easier to fix.

Change-Id: I9dadd2e8f98b560fadcc2b704ac52ff8f8b93913
diff --git a/src/test/java/net/onrc/onos/apps/sdnip/PatriciaTreeTest.java b/src/test/java/net/onrc/onos/apps/sdnip/PatriciaTreeTest.java
index 686971e..c5138c1 100644
--- a/src/test/java/net/onrc/onos/apps/sdnip/PatriciaTreeTest.java
+++ b/src/test/java/net/onrc/onos/apps/sdnip/PatriciaTreeTest.java
@@ -48,7 +48,7 @@
 
     @Test
     public void testPut() {
-        IPatriciaTree<RibEntry> ptree = new PatriciaTree<RibEntry>(32);
+        ptree = new PatriciaTree<RibEntry>(32);
 
         Prefix p1 = new Prefix("192.168.240.0", 20);
         RibEntry r1 = new RibEntry("192.168.10.101", "192.168.60.2");