pcu_sock: cosmetic: fix typo in a comment message

Change-Id: Ia7e91d803152ac3f2af88f4552fced27f59d8270
diff --git a/src/osmobts_sock.cpp b/src/osmobts_sock.cpp
index 2b2f4de..a139011 100644
--- a/src/osmobts_sock.cpp
+++ b/src/osmobts_sock.cpp
@@ -50,7 +50,7 @@
  */
 
 static struct {
-	struct osmo_fd conn_bfd;	/* fd for connection to lcr */
+	struct osmo_fd conn_bfd;	/* fd for connection to the BTS */
 	struct osmo_timer_list timer;	/* socket connect retry timer */
 	struct llist_head upqueue;	/* queue for sending messages */
 } pcu_sock_state;