Fix #7910 -- Added a missing import used when "django-admin.py compilemessages"

is run from a bad root directory.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8079 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/management/commands/compilemessages.py

@@ -1,7 +1,7 @@
 import os
 import sys
 from optparse import make_option
-from django.core.management.base import BaseCommand
+from django.core.management.base import BaseCommand, CommandError
 
 try:
     set