修复bytehelper & VlInt中的已知bug

src/main/java/component/CongestionMark.java

@@ -83,7 +83,12 @@ public class CongestionMark implements TlvComponentBase,InitialAble, IEncodingAb
         }
 
         // 读取 CongestionMark
-        long value=TLV.readNonNegativeInteger(block.getValue(),0,block.getLength().getVlIntValue2Int());
+        long value= 0;
+        try {
+            value = TLV.readNonNegativeInteger(block.getValue(),0,block.getLength().getVlIntValue2Int());
+        } catch (VlIntException e) {
+            e.printStackTrace();
+        }
         if(value<0){
             return false;
         }