char *strappend(char **dest, const char *src)
{
	char *real_dest = *dest;
	const size_t new_length = strlen(real_dest) + strlen(src);

	real_dest = CHECKED_ALLOC( realloc(real_dest, (1 + new_length) * sizeof(char)) );

	strcat(real_dest, src);

	*dest = real_dest;
	return real_dest;
}