Update convert-bst-to-greater-tree.cpp
Update convert-bst-to-greater-tree.cpp
kamyu104/LeetCode,kamyu104/LeetCode,kamyu104/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,yiwen-luo/LeetCode,kamyu104/LeetCode,jaredkoontz/leetcode,tudennis/LeetCode---kamyu104-11-24-2015,kamyu104/LeetCode,yiwen-luo/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,yiwen-luo/LeetCode,yiwen-luo/LeetCode,tudennis/LeetCode---kamyu104-11-24-2015,jaredkoontz/leetcode,jaredkoontz/leetcode,jaredkoontz/leetcode,tudennis/LeetCode---kamyu104-11-24-2015,jaredkoontz/leetcode,yiwen-luo/LeetCode