Merged revisions 88078 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r88078 | qwell | 2007-11-01 11:21:22 -0500 (Thu, 01 Nov 2007) | 4 lines

Make sure we set the poll fds to NULL after free()ing it.

Part of issue 11017, patch by tzafrir.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@88079 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_zap.c

@@ -7163,8 +7163,10 @@ static void *do_monitor(void *data)
 		/* Lock the interface list */
 		ast_mutex_lock(&iflock);
 		if (!pfds || (lastalloc != ifcount)) {
-			if (pfds)
+			if (pfds) {
 				ast_free(pfds);
+				pfds = NULL;
+			}
 			if (ifcount) {
 				if (!(pfds = ast_calloc(1, ifcount * sizeof(*pfds)))) {
 					ast_mutex_unlock(&iflock);