modified to not use realloc() on a NULL pointer

  size_t size;

};

void *myrealloc(void *ptr, size_t size)

{

  /* There might be a realloc() out there that doesn't like reallocing

     NULL pointers, so we take care of it here */

  if(ptr)

    return realloc(ptr, size);

  else

    return malloc(size);

}

size_t

WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)

{

  register int realsize = size * nmemb;

  struct MemoryStruct *mem = (struct MemoryStruct *)data;

  mem->memory = (char *)realloc(mem->memory, mem->size + realsize + 1);

  mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);

  if (mem->memory) {

    memcpy(&(mem->memory[mem->size]), ptr, realsize);

    mem->size += realsize;