fix typo. Bug #813

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1987 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index e1a6722..242b1cb 100755 (executable)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -2551,7 +2551,7 @@ static int add_sdp(struct sip_request *resp, struct sip_pvt *p, struct ast_rtp *
                                if (x < AST_FORMAT_MAX_AUDIO) {
                                        strncat(m, costr, sizeof(m) - strlen(m));
                                        snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x));
-                                       strncat(a, costr, sizeof(m) - strlen(a));
+                                       strncat(a, costr, sizeof(a) - strlen(a));
                                } else {
                                        strncat(m2, costr, sizeof(m2) - strlen(m2));
                                        snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/90000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x));