Don't get stuck looping when looking for CRV's

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3532 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index ee1ea91..e8442b6 100755 (executable)
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -6413,11 +6413,13 @@ static struct ast_channel *zt_request(char *type, int format, void *data)
        int trunkgroup;
        struct zt_pri *pri=NULL;
 #endif 
-       struct zt_pvt *exit;
+       struct zt_pvt *exit, *start, *end;
        ast_mutex_t *lock;
        
        /* Assume we're locking the iflock */
        lock = &iflock;
+       start = iflist;
+       end = ifend;
        /* We do signed linear */
        oldformat = format;
        format &= (AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
@@ -6481,6 +6483,8 @@ static struct ast_channel *zt_request(char *type, int format, void *data)
                                if (pris[x].trunkgroup == trunkgroup) {
                                        pri = pris + x;
                                        lock = &pri->lock;
+                                       start = pri->crvs;
+                                       end = pri->crvend;
                                        break;
                                }
                        }
@@ -6588,11 +6592,11 @@ next:
                if (backwards) {
                        p = p->prev;
                        if (!p)
-                               p = ifend;
+                               p = end;
                } else {
                        p = p->next;
                        if (!p)
-                               p = iflist;
+                               p = start;
                }
                /* stop when you roll to the one that we started from */
                if (p == exit)