Fix up the device state processing thread in app_queue so that it's not

possible for there to be entries in the queue and the thread is just sleeping
(Thanks to mmichelson for bringing the problem to my attention)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@73127 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/apps/app_queue.c b/apps/app_queue.c
index 85f1b6e..425f3c6 100644 (file)
--- a/apps/app_queue.c
+++ b/apps/app_queue.c
@@ -631,8 +631,10 @@ static void *device_state_thread(void *data)
 
        while (!device_state.stop) {
                ast_mutex_lock(&device_state.lock);
-               ast_cond_wait(&device_state.cond, &device_state.lock);
-               sc = AST_LIST_REMOVE_HEAD(&device_state.state_change_q, entry);
+               if (!(sc = AST_LIST_REMOVE_HEAD(&device_state.state_change_q, entry))) {
+                       ast_cond_wait(&device_state.cond, &device_state.lock);
+                       sc = AST_LIST_REMOVE_HEAD(&device_state.state_change_q, entry);
+               }
                ast_mutex_unlock(&device_state.lock);
 
                /* Check to see if we were woken up to see the request to stop */