remove useless variables, and argument checks for functions

that can safely handle a NULL argument.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@24464 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channel.c b/channel.c
index c38b375..9754b1b 100644 (file)
--- a/channel.c
+++ b/channel.c
@@ -1008,9 +1008,7 @@ struct ast_datastore *ast_channel_datastore_alloc(const struct ast_datastore_inf
 
        datastore->info = info;
 
-       if (uid != NULL) {
-               datastore->uid = ast_strdup(uid);
-       }
+       datastore->uid = ast_strdup(uid);
 
        return datastore;
 }
@@ -1483,12 +1481,10 @@ int ast_answer(struct ast_channel *chan)
                if (chan->tech->answer)
                        res = chan->tech->answer(chan);
                ast_setstate(chan, AST_STATE_UP);
-               if (chan->cdr)
-                       ast_cdr_answer(chan->cdr);
+               ast_cdr_answer(chan->cdr);
                break;
        case AST_STATE_UP:
-               if (chan->cdr)
-                       ast_cdr_answer(chan->cdr);
+               ast_cdr_answer(chan->cdr);
                break;
        }
        ast_channel_unlock(chan);
@@ -3736,14 +3732,13 @@ int ast_tonepair(struct ast_channel *chan, int freq1, int freq2, int duration, i
 
 ast_group_t ast_get_group(char *s)
 {
-       char *copy;
        char *piece;
-       char *c=NULL;
+       char *c;
        int start=0, finish=0, x;
        ast_group_t group = 0;
 
-       c = copy = ast_strdupa(s);
-       if (!copy)
+       c = ast_strdupa(s);
+       if (!c)
                return 0;
        
        while ((piece = strsep(&c, ","))) {