bin/50890: hexdump fails to exit on nonexistent file

[dholland%eecs.harvard.edu@localhost]

>Number:         50890
>Category:       bin
>Synopsis:       hexdump fails to exit on nonexistent file
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 03 21:50:00 +0000 2016
>Originator:     David A. Holland
>Release:        NetBSD 7.99.25 (20151222)
>Organization:
>Environment:
System: NetBSD macaran 7.99.25 NetBSD 7.99.25 (MACARAN) #34: Tue Dec 22 23:55:33 EST 2015 dholland@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
Architecture: x86_64
Machine: amd64
>Description:

macaran% hexdump -C blef
hexdump: blef: No such file or directory
hexdump: blef: Bad file descriptor

>How-To-Repeat:

>Fix:
likely trivial