Enable checkstyle check for blocks without braces.

Enable the checkstyle rule to check for block statements
without curly braces and fix any violations it finds.

Change-Id: Id4c58cea26f0d9ce7ed78643a4943c042886a12d
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java b/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
index 254cc24..187e8b7 100755
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
@@ -83,21 +83,28 @@
 
     @Override
     public boolean equals(Object obj) {
-        if (this == obj)
+        if (this == obj) {
             return true;
-        if (obj == null)
+        }
+        if (obj == null) {
             return false;
-        if (getClass() != obj.getClass())
+        }
+        if (getClass() != obj.getClass()) {
             return false;
+        }
         Link other = (Link) obj;
-        if (dst != other.dst)
+        if (dst != other.dst) {
             return false;
-        if (dstPort != other.dstPort)
+        }
+        if (dstPort != other.dstPort) {
             return false;
-        if (src != other.src)
+        }
+        if (src != other.src) {
             return false;
-        if (srcPort != other.srcPort)
+        }
+        if (srcPort != other.srcPort) {
             return false;
+        }
         return true;
     }