refactor newState to state, there is no new state
diff --git a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/pathmerge/BasicPathMergeVertex.java b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/pathmerge/BasicPathMergeVertex.java
index d402dbf..ff963f7 100644
--- a/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/pathmerge/BasicPathMergeVertex.java
+++ b/genomix/genomix-pregelix/src/main/java/edu/uci/ics/genomix/pregelix/operator/pathmerge/BasicPathMergeVertex.java
@@ -319,10 +319,10 @@
         outgoingMsg.reset();
         outgoingMsg.setUpdateMsg(false);
         if(selfFlag == State.IS_HEAD){
-            byte newState = getVertexValue().getState(); 
-            newState &= State.VERTEX_CLEAR;
-            newState |= State.IS_OLDHEAD;
-            getVertexValue().setState(newState);
+            byte state = getVertexValue().getState(); 
+            state &= State.VERTEX_CLEAR;
+            state |= State.IS_OLDHEAD;
+            getVertexValue().setState(state);
             this.activate();
             resetSelfFlag();
             outFlag |= MessageFlag.IS_HEAD;