Mans Rullgard d0e9415d23 fate: avoid freopen(NULL) in videogen/rotozoom ...

A number of systems do not implement freopen() with a NULL filename
correctly.  This changes these programs to output individual images
if opening a named output argument as a file fails, in this case
assuming it is a directory.

Signed-off-by: Mans Rullgard <mans@mansr.com>

2012-06-07 11:28:39 +01:00

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