Enable checkstyle rule to disallow C style
array declarations (byte foo[]) and fix
instances of it.

Change-Id: I34499c9f28bae5e2f2c5c47330768de76439e3d5
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java b/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
index e1b4c55..c872a4e 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
@@ -8,7 +8,7 @@
     public PtreeNode left;
     public PtreeNode right;
 
-    public byte key[];
+    public byte[] key;
     public int keyBits;
 
     public int refCount;