fix seg

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15853 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/xml_int/mod_xml_rpc/mod_xml_rpc.c

@@ -341,14 +341,18 @@ static abyss_bool http_directory_auth(TSession *r, char *domain_name)
 				
 				if (!domain_name) {
 					if (globals.virtual_host) {
-						domain_name = (char *) r->requestInfo.host;
-						if (!strncasecmp(domain_name, "www.", 3)) {
-							domain_name += 4;
+						if ((domain_name = (char *) r->requestInfo.host)) {
+							if (!strncasecmp(domain_name, "www.", 3)) {
+								domain_name += 4;
+							}
+						}
+					}
+					if (!domain_name) {
+						if (globals.default_domain) {
+							domain_name = globals.default_domain;
+						} else {
+							domain_name = switch_core_get_variable("domain");
 						}
-					} else if (globals.default_domain) {
-						domain_name = globals.default_domain;
-					} else {
-						domain_name = switch_core_get_variable("domain");
 					}
 				}