l1sap: fix wording in comment

The function rtppayload_is_valid() is called from the receiving RTP code
path. Lets use the word "forwarding" instead of "sending" to avoid the
impression something is sent (like sending RTP packets to the outside
world)

Change-Id: Ie7fcc53dea462b0d575b0c9ca73ba7507289eefe
---
M src/common/l1sap.c
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/common/l1sap.c b/src/common/l1sap.c
index 09e2d8c..a7eb830 100644
--- a/src/common/l1sap.c
+++ b/src/common/l1sap.c
@@ -1255,7 +1255,7 @@
 	if (resp_msg->len == 0)
 		return false;
 
-	/* Avoid sending bw-efficient AMR to lower layers, most bts models
+	/* Avoid forwarding bw-efficient AMR to lower layers, most bts models
 	 * don't support it. */
 	if (lchan->tch_mode == GSM48_CMODE_SPEECH_AMR &&
 		!rtppayload_is_octet_aligned(resp_msg->data, resp_msg->len)) {

