ortp: Fix the version check for ORTP by not using the cached result
The second check used the cached result for ORTP. Store the result
in ORTP_VERSION and my system properly detects that it is running
on < 0.21.
The HAVE_ORTP_021 will always be defined so just use #if and not
the #ifdef to fix the build.
diff --git a/src/trau/osmo_ortp.c b/src/trau/osmo_ortp.c
index 7dcff60..2f2f26c 100644
--- a/src/trau/osmo_ortp.c
+++ b/src/trau/osmo_ortp.c
@@ -349,7 +349,7 @@
int osmo_rtp_socket_bind(struct osmo_rtp_socket *rs, const char *ip, int port)
{
int rc;
-#ifdef HAVE_ORTP_021
+#if HAVE_ORTP_021
rc = rtp_session_set_local_addr(rs->sess, ip, port, port+1);
#else
rc = rtp_session_set_local_addr(rs->sess, ip, port);