Add missing ifdefs in ssl modules
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 4bf68ae..36c4f2f 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -1289,9 +1289,11 @@
                     ciphersuite_info->max_minor_ver < ssl->minor_ver )
                     continue;
 
+#if defined(POLARSSL_ECDH_C) || defined(POLARSSL_ECDSA_C)
                 if( ( ciphersuite_info->flags & POLARSSL_CIPHERSUITE_EC ) &&
                     ssl->handshake->ec_curve == 0 )
                     continue;
+#endif
 
                 goto have_ciphersuite;
             }