yang choice case translator + whitebox fix

Change-Id: I96f1855bc71a002335946150b51e911ae6ac2fb2
diff --git a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BitListener.java b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BitListener.java
index ddd08f3..16523c9 100644
--- a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BitListener.java
+++ b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BitListener.java
@@ -137,7 +137,7 @@
             switch (tmpNode.getYangConstructType()) {
                 case BITS_DATA: {
                     YangBits yangBits = (YangBits) tmpNode;
-                    if ((ctx.bitBodyStatement() == null) || (ctx.bitBodyStatement().positionStatement() == null)) {
+                    if (ctx.bitBodyStatement() == null || ctx.bitBodyStatement().positionStatement() == null) {
                         int maxPosition = 0;
                         boolean isPositionPresent = false;