Code Review 6849693: index of fdTable should be less than num. of fdTable in jdk7

[Chris Hegarty]

Alan, Michael,

Trivially change getFdEntry() to ensure that the given fd is not >= 
fdCount since fdTable ( the array indexed by fd ) has only fdCount elements.

I'm not sure how anyone seen this bug in real life, but making this 
simple change won't hurt and is strictly correct.

http://cr.openjdk.java.net/~chegar/6849693/webrev.00/webrev/

-Chris.