NameFinder.java (close): IN, OUT, and PROC can all be null, check for that case and don't deference it.

2005-04-22  Andrew Pinski  <pinskia@physics.uc.edu>

        * gnu/gcj/runtime/NameFinder.java (close): IN, OUT, and PROC can all
        be null, check for that case and don't deference it.

From-SVN: r98573