Conrad Meyer a60711fd00 sdiff(1): Fix potential NULL deref in cleanup path
In the presence of the --diff-pid argument, it is possible for 'diffpipe' to be
NULL.  Only fclose() it if it was initialized.

Reported by:	Coverity
CID:		1355183
Sponsored by:	EMC / Isilon Storage Division
2016-05-10 20:09:40 +00:00
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