luop.c: Transform FIXME from warning to pragma message

This way the issue is still visible but we can enable Werror to avoid
introducing new warnings.

Change-Id: I6c9b195bf0e3f853e202cdbdb72d35d83cd2a2ab
diff --git a/src/luop.c b/src/luop.c
index 2966380..4ef4ea3 100644
--- a/src/luop.c
+++ b/src/luop.c
@@ -251,8 +251,7 @@
 	gsup.msisdn_enc = msisdn_enc;
 	gsup.msisdn_enc_len = l;
 
-	/* FIXME: deal with encoding the following data */
-	gsup.hlr_enc;
+	#pragma message "FIXME: deal with encoding the following data: gsup.hlr_enc"
 
 	if (luop->is_ps) {
 		/* FIXME: PDP infos - use more fine-grained access control