sys/v4l2/v4l2src_calls.c: Fix framerate detection code some more.
Original commit message from CVS: * sys/v4l2/v4l2src_calls.c: (gst_v4l2src_probe_caps_for_format_and_size): Fix framerate detection code some more. Handle the case where there is a weird step in the stepwise framerates. Don't overwrite the min interval with the framerate, use a temp variable instead. Use max in the Continuous framerate intervals instead of step, which is 1 according to the docs. Fixes #475424.