My OSX laptop rightly gave a warning because of sticking strlen() into
an int, but once I took a closer look... it appears that the strlen()
was part of a needlessly verbose implementation for tor_strdup().
While I was there, I fixed the usage of tor_free() in test_hs.c: It
checks for NULL, and it zeros its argument. So instead of
if (foo) {
tor_free(foo);
foo = NULL;
}
we should just say
tor_free(foo);