removed wrong isduplicate assignment

bintree.c

@@ -87,11 +87,12 @@ TreeNode *addToTreeRec(TreeNode *currentNode, TreeNode *newNode, CompareFctType
             *isDuplicate = 1;
         }
     }
-
+    /*
     if (isDuplicate != NULL)
     {
         *isDuplicate = 0;
     }
+    */
     return currentNode;
 }