[cups.bugs] [HIGH] STR #1738: usb backend stalls with 'Printer off-line'

[twaugh.redhat]

[STR New]

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=192015

is an example of a case where the usb backend fails to print to a Konica
Minolta USB printer, although the 1.1.23 usb backend works fine.

The difference seems to be in checking the printer status before sending
the file.

The error_log file continually says "Printer off-line." with the 1.2.1 usb
backend.

Link: http://www.cups.org/str.php?L1738
Version: 1.2.1