gbproxy: flush_stored_messages: Get rid of msg param

Log line actually makes more sense out of the function where IMSI acq is
resolved. We can then get rid of msg param which may cause confusion and
add complexitiy to code for no good reason.

Change-Id: I6716a260e12a3cf36af0501ce611c6c1e608f537
diff --git a/src/gprs/gb_proxy.c b/src/gprs/gb_proxy.c
index 331ebc8..0b5758a 100644
--- a/src/gprs/gb_proxy.c
+++ b/src/gprs/gb_proxy.c
@@ -324,18 +324,12 @@
 /* Got identity response with IMSI, assuming the request had
  * been generated by the gbproxy */
 static int gbproxy_flush_stored_messages(struct gbproxy_peer *peer,
-					  struct msgb *msg,
 					  time_t now,
 					  struct gbproxy_link_info* link_info)
 {
 	int rc;
 	struct msgb *stored_msg;
 
-	LOGP(DLLC, LOGL_DEBUG,
-	     "NSEI=%d(BSS) IMSI acquisition succeeded, "
-	     "flushing stored messages\n",
-	     msgb_nsei(msg));
-
 	/* Patch and flush stored messages towards the SGSN */
 	while ((stored_msg = msgb_dequeue_count(&link_info->stored_msgs,
 						&link_info->stored_msgs_len))) {
@@ -475,10 +469,14 @@
 			gsm48_hdr_pdisc(parse_ctx->g48_hdr) == GSM48_PDISC_MM_GPRS &&
 			gsm48_hdr_msg_type(parse_ctx->g48_hdr) == GSM48_MT_GMM_ID_RESP;
 
+		LOGP(DLLC, LOGL_DEBUG,
+		     "NSEI=%d(BSS) IMSI acquisition succeeded, "
+		     "flushing stored messages\n",
+		     msgb_nsei(msg));
 		/* The IMSI is now available. If flushing the messages fails,
 		 * then link_info has been deleted and we should return
 		 * immediately. */
-		if (gbproxy_flush_stored_messages(peer, msg, now, link_info) < 0)
+		if (gbproxy_flush_stored_messages(peer, now, link_info) < 0)
 			return 0;
 
 		gbproxy_reset_imsi_acquisition(link_info);