Merged revisions 138124 via svnmerge from

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

........
r138124 | tilghman | 2008-08-15 14:22:48 -0500 (Fri, 15 Aug 2008) | 4 lines

e->data can be NULL, so use the safe version of ast_strdup()
(closes issue #13312)
 Reported by: pj

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@138133 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/pbx.c

@@ -3391,7 +3391,7 @@ int ast_extension_state_add(const char *context, const char *exten,
 	 */
 	if (e->exten[0] == '_') {
 		ast_add_extension(e->parent->name, 0, exten, e->priority, e->label,
-			e->cidmatch, e->app, strdup(e->data), free,
+			e->cidmatch, e->app, ast_strdup(e->data), free,
 			e->registrar);
 		e = ast_hint_extension(NULL, context, exten);
 		if (!e || e->exten[0] == '_') {