Initialization for parentDFSIndex added.

src/main/java/net/floodlightcontroller/util/ClusterDFS.java

@@ -4,11 +4,12 @@ public class ClusterDFS {
     long dfsIndex;
     long parentDFSIndex;
     long lowpoint;
-    boolean visited; 
+    boolean visited;
 
     public ClusterDFS() {
-        visited = false; 
+        visited = false;
         dfsIndex = Long.MAX_VALUE;
+        parentDFSIndex = Long.MAX_VALUE;
         lowpoint = Long.MAX_VALUE;
     }
 
@@ -20,6 +21,14 @@ public class ClusterDFS {
         this.dfsIndex = dfsIndex;
     }
 
+    public long getParentDFSIndex() {
+        return parentDFSIndex;
+    }
+
+    public void setParentDFSIndex(long parentDFSIndex) {
+        this.parentDFSIndex = parentDFSIndex;
+    }
+
     public long getLowpoint() {
         return lowpoint;
     }
@@ -35,14 +44,4 @@ public class ClusterDFS {
     public void setVisited(boolean visited) {
         this.visited = visited;
     }
-
-    public long getParentDFSIndex() {
-        return parentDFSIndex;
-    }
-
-    public void setParentDFSIndex(long parentDFSIndex) {
-        this.parentDFSIndex = parentDFSIndex;
-    }
-
-
 }