sgsn: spelling fixes inside comments
diff --git a/openbsc/src/gprs/gprs_llc.c b/openbsc/src/gprs/gprs_llc.c
index a4bff65..6f535bc 100644
--- a/openbsc/src/gprs/gprs_llc.c
+++ b/openbsc/src/gprs/gprs_llc.c
@@ -550,7 +550,7 @@
/* HACK: non-standard recovery handling. If remote LLE
* is re-transmitting the same sequence number for
- * threee times, don't discard the frame but pass it on
+ * three times, don't discard the frame but pass it on
* and 'learn' the new sequence number */
if (gph->seq_tx != lle->vu_recv_last) {
lle->vu_recv_last = gph->seq_tx;