(fs) UnixNativeDispatcher.close0 may throw UnixException

ADDITIONAL SYSTEM INFORMATION :
Applies to any UNIX/POSIX-ish platform, in theory.

A DESCRIPTION OF THE PROBLEM :
The `sun.nio.fs.UnixNativeDispatcher#close0` method can throw exceptions which are not declared or handled in `sun.nio.fs.UnixNativeDispatcher`, when the underlying syscall returns `EIO`, `ENOSPC`, etc.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Not sure; I guess you could set up a bad filesystem via FUSE on Linux and then make it blow up on `close`.