Error : Heap block at X modified

I was trying to use destructors for a struct. However, the compiler reported errors that Heap block at 006651F8 modified at 00665229 past requested size of 29 gift1.exe has triggered a breakpoint.

    #include "stdafx.h"

    struct Node{
        char *name;
        int age;

        Node(char *n = 0, int a = 0){
            this->name = _strdup(n);
            age = a;
        }

        ~Node(){
            if (this->name != 0)
                delete[] this->name;
        }
    };

    int _tmain(int argc, _TCHAR* argv[])
    {

        Node node1("Andy", 20);
        return 0;
    }

May I know where went wrong?

Does it matter if I use nameinstead of this->name ?