Fix no-ec compilation

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2624)

ssl/statem/extensions.c

diff --git a/ssl/statem/extensions.c b/ssl/statem/extensions.c
index 50fd3bb..edb674d 100644
--- a/ssl/statem/extensions.c
+++ b/ssl/statem/extensions.c
@@ -36,7 +36,9 @@
 static int init_ems(SSL *s, unsigned int context);
 static int final_ems(SSL *s, unsigned int context, int sent, int *al);
 static int init_psk_kex_modes(SSL *s, unsigned int context);
+#ifndef OPENSSL_NO_EC
 static int final_key_share(SSL *s, unsigned int context, int sent, int *al);
+#endif
 #ifndef OPENSSL_NO_SRTP
 static int init_srtp(SSL *s, unsigned int context);
 #endif
@@ -244,6 +246,7 @@
         init_psk_kex_modes, tls_parse_ctos_psk_kex_modes, NULL, NULL,
         tls_construct_ctos_psk_kex_modes, NULL
     },
+#ifndef OPENSSL_NO_EC
     {
         /*
          * Must be in this list after supported_groups. We need that to have
@@ -257,6 +260,7 @@
         tls_construct_stoc_key_share, tls_construct_ctos_key_share,
         final_key_share
     },
+#endif
     {
         /*
          * Special unsolicited ServerHello extension only used when
@@ -960,7 +964,7 @@
     return 1;
 }
 
-
+#ifndef OPENSSL_NO_EC
 static int final_key_share(SSL *s, unsigned int context, int sent, int *al)
 {
     if (!SSL_IS_TLS13(s))
@@ -1078,6 +1082,7 @@
 
     return 1;
 }
+#endif
 
 static int init_psk_kex_modes(SSL *s, unsigned int context)
 {

ssl/statem/statem_lib.c

diff --git a/ssl/statem/statem_lib.c b/ssl/statem/statem_lib.c
index d7564e6..3a03ada 100644
--- a/ssl/statem/statem_lib.c
+++ b/ssl/statem/statem_lib.c
@@ -1745,6 +1745,7 @@
  * used. Returns 1 if the group is in the list (and allowed if |checkallow| is
  * 1) or 0 otherwise.
  */
+#ifndef OPENSSL_NO_EC
 int check_in_list(SSL *s, unsigned int group_id, const unsigned char *groups,
                   size_t num_groups, int checkallow)
 {
@@ -1766,3 +1767,4 @@
     /* If i == num_groups then not in the list */
     return i < num_groups;
 }
+#endif