simplify logic in a small block of code

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@31842 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 0b657f6..cd9479a 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -10034,15 +10034,11 @@ static int function_sippeer(struct ast_channel *chan, char *cmd, char *data, cha
        } else  if (!strcasecmp(colname, "codecs")) {
                ast_getformatname_multiple(buf, len -1, peer->capability);
        } else  if (!strncasecmp(colname, "codec[", 6)) {
-               char *codecnum, *ptr;
+               char *codecnum;
                int index = 0, codec = 0;
                
-               codecnum = strchr(colname, '[');
-               *codecnum = '\0';
-               codecnum++;
-               if ((ptr = strchr(codecnum, ']')))
-                       *ptr = '\0';
-
+               codecnum = colname + 6; /* move past the '[' */
+               codecnum = strsep(&codecnum, "]"); /* trim trailing ']' if any */
                index = atoi(codecnum);
                if((codec = ast_codec_pref_index(&peer->prefs, index))) {
                        ast_copy_string(buf, ast_getformatname(codec), len);