Merged revisions 109389 via svnmerge from

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

........
r109389 | qwell | 2008-03-18 10:07:04 -0500 (Tue, 18 Mar 2008) | 3 lines

Do not return with a successful authentication if the From header ends up empty.
(AST-2008-003)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@109395 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -11468,8 +11468,6 @@ static enum check_auth_result check_user_full(struct sip_pvt *p, struct sip_requ
 			ast_shrink_phone_number(tmp);
 		ast_string_field_set(p, cid_num, tmp);
 	}
-	if (ast_strlen_zero(of))
-		return AUTH_SUCCESSFUL;
 
 	if (global_match_auth_username) {
 		/*