Fix checkstyle whitespace issues - WHITESPACE ONLY

Change-Id: Ic205c1afd639c6008d61d9de95cb764eeb6238ca
diff --git a/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java b/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
index 93bce90..61a3b34 100644
--- a/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
+++ b/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
@@ -12,24 +12,24 @@
 
 public class LinkSerializer extends SerializerBase<Link> {
 
-	public LinkSerializer() {
-		super(Link.class);
-	}
+    public LinkSerializer() {
+        super(Link.class);
+    }
 
-	@Override
-	public void serialize(Link link, JsonGenerator jsonGenerator, 
-			SerializerProvider serializerProvider)
-			throws IOException, JsonGenerationException {
-		jsonGenerator.writeStartObject();
-		jsonGenerator.writeStringField("src-switch", 
-				HexString.toHexString(link.getSrcSwitch().getDpid()));
-		jsonGenerator.writeNumberField("src-port", 
-				link.getSrcPort().getNumber());
-		jsonGenerator.writeStringField("dst-switch", 
-				HexString.toHexString(link.getDstSwitch().getDpid()));
-		jsonGenerator.writeNumberField("dst-port", 
-				link.getDstPort().getNumber());
-		jsonGenerator.writeEndObject();
-	}
+    @Override
+    public void serialize(Link link, JsonGenerator jsonGenerator,
+                          SerializerProvider serializerProvider)
+            throws IOException, JsonGenerationException {
+        jsonGenerator.writeStartObject();
+        jsonGenerator.writeStringField("src-switch",
+                HexString.toHexString(link.getSrcSwitch().getDpid()));
+        jsonGenerator.writeNumberField("src-port",
+                link.getSrcPort().getNumber());
+        jsonGenerator.writeStringField("dst-switch",
+                HexString.toHexString(link.getDstSwitch().getDpid()));
+        jsonGenerator.writeNumberField("dst-port",
+                link.getDstPort().getNumber());
+        jsonGenerator.writeEndObject();
+    }
 
 }