getinmemory.c: use better argument names for write callback

static size_t

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

WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)

{

  size_t realsize = size * nmemb;

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

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

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

  if (mem->memory == NULL) {

    exit(EXIT_FAILURE);

  }

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

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

  mem->size += realsize;

  mem->memory[mem->size] = 0;