msc/gsm_04_80.h: cosmetic: whitespace fix

Change-Id: Ia3632c75cf2d2ce79b42b3b55ef50a72ab1bb94c
diff --git a/include/osmocom/msc/gsm_04_80.h b/include/osmocom/msc/gsm_04_80.h
index 40ecfba..52d2f4a 100644
--- a/include/osmocom/msc/gsm_04_80.h
+++ b/include/osmocom/msc/gsm_04_80.h
@@ -8,10 +8,10 @@
 struct gsm_subscriber_connection;
 
 int gsm0480_send_ussd_response(struct gsm_subscriber_connection *conn,
-			       const struct msgb *in_msg, const char* response_text, 
+			       const struct msgb *in_msg, const char* response_text,
 			       const struct ss_request *req);
 int gsm0480_send_ussd_reject(struct gsm_subscriber_connection *conn,
-			     const struct msgb *msg, 
+			     const struct msgb *msg,
 			     const struct ss_request *request);
 
 int msc_send_ussd_notify(struct gsm_subscriber_connection *conn, int level,