finished component: HopLimit

src/main/java/component/CongestionMark.java

@@ -82,9 +82,9 @@ public class CongestionMark implements TlvComponentBase,InitialAble, IEncodingAb
             return false;
         }
 
-        // 读取 interestLifeTime
+        // 读取 CongestionMark
         long value=TLV.readNonNegativeInteger(block.getValue(),0,block.getLength().getVlIntValue2Int());
-        if(value==0){
+        if(value<0){
             return false;
         }
         this.setCongestionLevel(value);