progs/catsign.c: Don't gratuitously try to open a temporary file.
authorMark Wooding <mdw@distorted.org.uk>
Mon, 13 Aug 2018 20:30:07 +0000 (21:30 +0100)
committerMark Wooding <mdw@distorted.org.uk>
Mon, 13 Aug 2018 20:39:05 +0000 (21:39 +0100)
The `merry dance' where we open the necessary output files was bungled,
which caused a temporary file to be opened unless an explicit output
file was requested without buffering.


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