OpenSSL: fix bulid on older library versions

Broken-by: a89b6bd32a

diff --git a/src/src/tls-openssl.c b/src/src/tls-openssl.c
index 26cc986c5d32583e25978ee0c65a35a20de241af..f7ff459b03ff0b235979b7e3eb2bfeb9306dfd0c 100644 (file)
--- a/src/src/tls-openssl.c
+++ b/src/src/tls-openssl.c
@@ -2765,7 +2765,10 @@ if (rc <= 0)
       {
       uschar * s = US"SSL_accept";
       int r = ERR_GET_REASON(ERR_peek_error());
-      if (  r == SSL_R_WRONG_VERSION_NUMBER || r == SSL_R_VERSION_TOO_LOW
+      if (  r == SSL_R_WRONG_VERSION_NUMBER
+#ifdef SSL_R_VERSION_TOO_LOW
+         || r == SSL_R_VERSION_TOO_LOW
+#endif
          || r == SSL_R_UNKNOWN_PROTOCOL || r == SSL_R_UNSUPPORTED_PROTOCOL)
        s = string_sprintf("%s (%s)", s, SSL_get_version(server_ssl));
       (void) tls_error(s, NULL, sigalrm_seen ? US"timed out" : NULL, errstr);