[ONOS-4348] Yang Bits, Binary and Decimal64

Change-Id: I8e4e54a19a8f9634cbc56a07579a1730174f53f6
diff --git a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java
index a89c09e..9157801 100644
--- a/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java
+++ b/utils/yangutils/datamodel/src/main/java/org/onosproject/yangutils/datamodel/YangLengthRestriction.java
@@ -102,6 +102,7 @@
      * Creates a YANG length restriction object.
      */
     public YangLengthRestriction() {
+        setLengthRestriction(new YangRangeRestriction<YangUint64>());
     }
 
     /**