Description of problem:
The texttopaps filter (paps running in CUPS filter mode) doesn't have a non-zero
exit code when it encounters an error.  As a result, print jobs can potentially
get lost.

Version-Release number of selected component (if applicable):
0.6.6-15.fc6

How reproducible:
100%

Steps to Reproduce:
CHARSET=utf-16 CUPS_SERVER=127.0.0.1 /usr/lib/cups/filter/texttopaps 1 root '' 1
'' input.txt >/dev/null
echo $?
  
Actual results:
(null): Error while converting strings.
0

Expected results:
texttopaps: Error while converting strings.
1

Additional info:
Not sure why it displays '(null)' as the program name, but that's a small issue
compared to the exit code.