Use LinkEvent class instead of Link class for elements of Path

Change-Id: Iaf40f6e21d7cc411476909d3a3f32746787e16a6
diff --git a/src/main/java/net/onrc/onos/intent/runtime/PathCalcRuntimeModule.java b/src/main/java/net/onrc/onos/intent/runtime/PathCalcRuntimeModule.java
index d72a13a..4c90a23 100644
--- a/src/main/java/net/onrc/onos/intent/runtime/PathCalcRuntimeModule.java
+++ b/src/main/java/net/onrc/onos/intent/runtime/PathCalcRuntimeModule.java
@@ -74,7 +74,7 @@
 	@Override
 	public void init(FloodlightModuleContext context) throws FloodlightModuleException {
 		datagridService = context.getServiceImpl(IDatagridService.class);
-		networkGraphService = context.getServiceImpl(INetworkGraphService.class); 
+		networkGraphService = context.getServiceImpl(INetworkGraphService.class);
 	}
 
 	@Override