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/util/FlowEntryId.java b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
index 5b19e91..a46549f 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
@@ -46,12 +46,14 @@
         // large unsigned hex long values.
         //
         char c = 0;
-        if (value.length() > 2)
+        if (value.length() > 2) {
             c = value.charAt(1);
-        if ((c == 'x') || (c == 'X'))
+        }
+        if ((c == 'x') || (c == 'X')) {
             this.value = new BigInteger(value.substring(2), 16).longValue();
-        else
+        } else {
             this.value = Long.decode(value);
+        }
     }
 
     /**