Merged revisions 212506 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

................
  r212506 | jpeeler | 2009-08-17 11:50:45 -0500 (Mon, 17 Aug 2009) | 19 lines
  
  Merged revisions 212498 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r212498 | jpeeler | 2009-08-17 11:34:56 -0500 (Mon, 17 Aug 2009) | 12 lines
    
    Fix segfault when reloading chan_misdn.
    
    If more ports were specified than configured in misdn.conf a reload would crash
    asterisk. The problem was the unconfigured port was using data from the
    previously configured port. When the data for an unconfigured port was freed a
    crash would result from the double free.
    
    (closes issue #12113)
    Reported by: agupta
    Patches:
          bug12113.patch uploaded by jpeeler (license 325)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@212507 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/misdn_config.c

@@ -1005,6 +1005,11 @@ static void _build_port_config (struct ast_variable *v, char *cat)
 	}
 
 	for (i = 0; i < (max_ports + 1); ++i) {
+		if (i > 0 && cfg_for_ports[0]) {
+			/* default category, will populate the port_cfg with additional port
+			categories in subsequent calls to this function */
+			memset(cfg_tmp, 0, sizeof(cfg_tmp));
+		}
 		if (cfg_for_ports[i]) {
 			memcpy(port_cfg[i], cfg_tmp, sizeof(cfg_tmp));
 		}