*** Submitted as 8dfddf14ba55 *** vac: fix segfault on DMSYMLINK or DMDEVICE Fix segfault when the first archived file is DMSYMLINK or DMDEVICE. Reinitialize the buffer to zero before calling readlink. R=rsc CC=plan9port.codebot http://codereview.appspot.com/5500097 Committer: Russ Cox <rsc@swtch.com>