also log MNCC_SETUP_REQ

If an incoming MNCC_SETUP_REQ ends up in Paging (as usually it does), the early
return so far skipped logging of that MNCC message. Add this logging.

Change-Id: I1495dd562a06cf6c1e9453a1fe111bdf8f4be081
diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c
index c50ec7f..a90ddce 100644
--- a/src/libmsc/gsm_04_08_cc.c
+++ b/src/libmsc/gsm_04_08_cc.c
@@ -1941,6 +1941,9 @@
 
 		/* If subscriber has no conn */
 		if (!msc_a) {
+			/* This condition will return before the common logging of the received MNCC message below, so
+			 * log it now. */
+			LOG_TRANS_CAT(trans, DMNCC, LOGL_DEBUG, "rx %s\n", get_mncc_name(msg->msg_type));
 
 			if (vsub->cs.is_paging) {
 				LOG_TRANS(trans, LOGL_DEBUG,