Strip carriage returns from extended descriptions

On Windows, CRs in extended descriptions could result in output of
\r\r\n which could be displayed as 2 newlines (e.g. in notepad.exe).
Since the \n -> \r\n expansion already happens on Windows stdout,
we don't want them in the processed input (file metadata).

As reported by DesotoFireflite (VALHALLA), thank you!

exec/filelist.js

@@ -393,6 +393,7 @@ function list_file(file, fmt, props)
 				if(name == 'name')
 					a.push(FileBase().format_name(p, name_len, options.pad));
 				else if(name == 'extdesc') {
+					p = p.replace(/\r/g, '');
 					if(both_desc)
 						a.push(p.replace(/([^\n]+)/g, (extdesc_prefix + "$&")).trimRight());
 					else