Stefano Sabatini 50f852186f Make device_open() store the VIDIOC_QUERYCAP ioctl errno, and in case ...

of failure return the stored value rather than the current errno,
which may be overwritten by a following call to close().

Originally committed as revision 23001 to svn://svn.ffmpeg.org/ffmpeg/trunk

2010-05-01 08:24:24 +00:00

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