backport list handling fix from trunk (solves memory leak problem in cdr variables and device state watchers)

remove unusued variable to silence compiler warning


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@10863 65c4cc65-6c06-0410-ace0-fbb531ad65f3

dnsmgr.c

@@ -307,7 +307,6 @@ static int do_reload(int loading)
 	const char *enabled_value;
 	int interval;
 	int was_enabled;
-	pthread_attr_t attr;
 	int res = -1;
 
 	/* ensure that no refresh cycles run while the reload is in progress */

include/asterisk/linkedlists.h

@@ -274,9 +274,11 @@ struct {								\
 #define AST_LIST_TRAVERSE_SAFE_BEGIN(head, var, field) {				\
 	typeof((head)->first) __list_next;						\
 	typeof((head)->first) __list_prev = NULL;					\
-	for ((var) = (head)->first,  __list_next = (var) ? (var)->field.next : NULL;	\
+	typeof((head)->first) __new_prev = NULL;					\
+	for ((var) = (head)->first, __new_prev = (var),					\
+	      __list_next = (var) ? (var)->field.next : NULL;				\
 	     (var);									\
-	     __list_prev = (var), (var) = __list_next,					\
+	     __list_prev = __new_prev, (var) = __list_next,				\
 	     __list_next = (var) ? (var)->field.next : NULL				\
 	    )
 
@@ -292,6 +294,7 @@ struct {								\
   previous entry, if any).
  */
 #define AST_LIST_REMOVE_CURRENT(head, field)						\
+	__new_prev = __list_prev;							\
 	if (__list_prev)								\
 		__list_prev->field.next = __list_next;					\
 	else										\