Description of problem:
redhat-config-printer utility has broken call of alternatives tool.

[root@localhost root]# locale
LANG=ru_RU.CP1251
LC_CTYPE="ru_RU.CP1251"
LC_NUMERIC="ru_RU.CP1251"
LC_TIME="ru_RU.CP1251"
LC_COLLATE="ru_RU.CP1251"
LC_MONETARY="ru_RU.CP1251"
LC_MESSAGES="ru_RU.CP1251"
LC_PAPER="ru_RU.CP1251"
LC_NAME="ru_RU.CP1251"
LC_ADDRESS="ru_RU.CP1251"
LC_TELEPHONE="ru_RU.CP1251"
LC_MEASUREMENT="ru_RU.CP1251"
LC_IDENTIFICATION="ru_RU.CP1251"
LC_ALL=

[root@localhost root]# redhat-config-printer
Traceback (most recent call last):
  File "/usr/sbin/redhat-config-printer", line 9, in ?
    debug1: channel 1: FORCE input drain
import queueTree
  File "/usr/share/printconf/util/queueTree.py", line 945, in ?
    queueTree()
  File "/usr/share/printconf/util/queueTree.py", line 102, in __init__
    if cups_import.import_needed ():
  File "/usr/share/printconf/util/cups_import.py", line 200, in
import_needed
    which = which_spooler ()
  File "/usr/share/printconf/util/cups_import.py", line 195, in
which_spooler
    return which
UnboundLocalError: local variable 'which' referenced before assignment

Version-Release number of selected component (if applicable):
[root@localhost root]# rpm -q redhat-config-printer
redhat-config-printer-0.6.47.3.19-1

How reproducible:
Only try to start it.
  
Expected results:
Properly work.

Additional info:
I propose to write 'LC_MESSAGES=C /usr/sbin/alternatives ...' into 
/usr/share/printconf/util/cups_import.py as quick fix.