Fix file leakage in the freebsd32_ioctl routines.
Fix file leakage in the freebsd32_ioctl routines.

Code inspection shows freebsd32_ioctl calls fget for a fd and calls
a subroutine to handle each specific ioctl.  It is expected that the
subroutine will call fdrop when done.  However many of the subroutines
will exit out early if copyin encounters an error resulting in fdrop
never being called.

Submitted by:	John Wehle <john feith com>
MFC after:	3 days

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