Merged revisions 73678 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r73678 | russell | 2007-07-06 10:55:41 -0500 (Fri, 06 Jul 2007) | 7 lines

(closes issue #10125)
Reported by: makoto
Patches submitted by: makoto

This fixes a crash in chan_sip that happens when the bindaddr setting is not
valid on Asterisk startup, gets fixed, and then a reload gets issued.

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@73679 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -15177,8 +15177,12 @@ static void *do_monitor(void *data)
 			sip_do_reload(sip_reloadreason);
 
 			/* Change the I/O fd of our UDP socket */
-			if (sipsock > -1)
-				sipsock_read_id = ast_io_change(io, sipsock_read_id, sipsock, NULL, 0, NULL);
+			if (sipsock > -1) {
+				if (sipsock_read_id)
+					sipsock_read_id = ast_io_change(io, sipsock_read_id, sipsock, NULL, 0, NULL);
+				else
+					sipsock_read_id = ast_io_add(io, sipsock, sipsock_read, AST_IO_IN, NULL);
+			}
 		}
 		/* Check for interfaces needing to be killed */
 		ast_mutex_lock(&iflock);