without-ssl does not work

[kmmertes]

On OSX 10.11 (El Capitan), when running "./configure --without-ssl" as instructed to build without openssl, the source code still tries to:
#include <openssl/ssl.h>
because the generated file websock_config.h contains:
`
/* src/websock_config.h. Generated from websock_config.h.in by configure. */
#ifndef WEBSOCK_CONFIG_H
#define WEBSOCK_CONFIG_H 1

#define WEBSOCK_PACKAGE_STRING "libwebsock 1.0.7"
#define WEBSOCK_PACKAGE_VERSION "1.0.7"
#define WEBSOCK_PACKAGE_NAME "libwebsock"
#define WEBSOCK_HAVE_SSL @WEBSOCK_HAVE_SSL@
#endif
`
This results in build failure because openssl is not found. Changing
#define WEBSOCK_HAVE_SSL @WEBSOCK_HAVE_SSL@
to
#undef WEBSOCK_HAVE_SSL
results in a successful build.

However, without-ssl should have worked, unless I am doing something wrong.