Use OPENSSL_NO_DTLS instead of OPENSSL_NO_DTLS1

Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/apps/s_client.c b/apps/s_client.c
index e3ab42b..f93ae35 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -567,7 +567,7 @@
 #ifndef OPENSSL_NO_SSL3
     {"ssl3", OPT_SSL3, '-', "Just use SSLv3"},
 #endif
-#ifndef OPENSSL_NO_DTLS1
+#ifndef OPENSSL_NO_DTLS
     {"dtls", OPT_DTLS, '-'},
     {"dtls1", OPT_DTLS1, '-', "Just use DTLSv1"},
     {"dtls1_2", OPT_DTLS1_2, '-'},
@@ -954,7 +954,7 @@
         case OPT_TLS1:
             meth = TLSv1_client_method();
             break;
-#ifndef OPENSSL_NO_DTLS1
+#ifndef OPENSSL_NO_DTLS
         case OPT_DTLS:
             meth = DTLS_client_method();
             socket_type = SOCK_DGRAM;