RFR: 8172346 sun.net.ftp.FtpDirEntry.setCreated(Date) may expose internal represent

[vyom tewari]

Hi All,

Please review below a trivial fix.
Webrev : http://cr.openjdk.java.net/~vtewari/8172346/webrev0.0/index.html

BugID: https://bugs.openjdk.java.net/browse/JDK-8172346

The above code change will avoid storing the externally mutable object 
reference into FtpDirEntry.

Thanks,

Vyom