Some tidying up, I guess

webv4/root/api/attachments.ssjs

@@ -11,25 +11,21 @@ function barfOut(err) {
 	exit();
 }
 
-if (typeof http_request.query.sub === 'undefined' ||
-	(	http_request.query.sub[0] !== 'mail' &&
-		typeof msg_area.sub[http_request.query.sub[0]] === 'undefined'
-	)
-) {
+if (http_request.query.sub === undefined || (http_request.query.sub[0] !== 'mail' && msg_area.sub[http_request.query.sub[0]] === undefined)) {
 	barfOut('Invalid sub.');
 }
 
 var sub = http_request.query.sub[0];
 
-if (typeof http_request.query.msg === 'undefined') {
+if (http_request.query.msg === undefined) {
 	barfOut('No message number provided.');
 }
 
 var id = parseInt(http_request.query.msg[0]);
 
-if (typeof http_request.query.cid !== 'undefined') {
+if (http_request.query.cid !== undefined) {
 	var cid = http_request.query.cid[0];
-} else if (typeof http_request.query.filename !== 'undefined') {
+} else if (http_request.query.filename !== undefined) {
 	var filename = http_request.query.filename[0];
 } else {
 	barfOut('No attachment specified.');
@@ -40,7 +36,7 @@ if (!msgBase.open()) barfOut('Unable to open MsgBase ' + sub);
 
 var header = msgBase.get_msg_header(false, id);
 if (header === null) barfOut('No such message.');
-if (typeof msgBase.cfg === 'undefined' && header.to_ext != user.number) {
+if (msgBase.cfg === undefined && header.to_ext != user.number) {
 	barfOut('Not your message.');
 }
 
@@ -48,16 +44,18 @@ var body = msgBase.get_msg_body(false, id, header);
 if (body === null) barfOut('Cannot read message body!');
 msgBase.close();
 
-if (typeof cid !== 'undefined') {
+msgBase = undefined;
+
+if (cid !== undefined) {
 	var att = mime_get_cid_attach(header, body, cid);
-} else if (typeof filename !== 'undefined') {
+} else if (filename !== undefined) {
 	var att = mime_get_attach(header, body, filename);
 }
 
-if (typeof att != 'undefined') {
-	if (typeof att.content_type !== 'undefined') {
-		http_reply.header['Content-Type'] = att.content_type;
-	}
+if (att !== undefined) {
+	if (att.content_type !== undefined) http_reply.header['Content-Type'] = att.content_type;
 	http_reply.header['Content-Length'] = att.body.length;
 	write(att.body);
 }
+
+att = undefined;
\ No newline at end of file