even more room for t38

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10094 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_rtp.c

@@ -1275,7 +1275,7 @@ static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_
 			return_cng_frame();
 		}
 
-		if (bytes && bytes < 8) {
+		if (bytes && bytes < 5) {
 			continue;
 		}