Allow DH to be completely disabled (#97)

Reduces binary size by ~2kB by default and by 21kB with no other
libtommath functions users, ex. with curve25519 kex and ed25519
key only.

1 files changed, 2 insertions, 0 deletions

diff --git a/cli-kex.c b/cli-kex.c
index 98b0245..af1cfcf 100644
--- a/cli-kex.c
+++ b/cli-kex.c
@@ -155,10 +155,12 @@ void recv_msg_kexdh_reply() {
 #endif
 	}
 
+#if DROPBEAR_NORMAL_DH
 	if (cli_ses.dh_param) {
 		free_kexdh_param(cli_ses.dh_param);
 		cli_ses.dh_param = NULL;
 	}
+#endif
 #if DROPBEAR_ECDH
 	if (cli_ses.ecdh_param) {
 		free_kexecdh_param(cli_ses.ecdh_param);