Fixed use of "_" in RelaxNGCompact validator which was conflicting with gettext tag

git-svn-id: http://code.djangoproject.com/svn/django/trunk@1340 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/validators.py

@@ -457,7 +457,7 @@ class RelaxNGCompact:
         display_errors = []
         lines = field_data.split('\n')
         for error in errors:
-            _, line, level, message = error.split(':', 3)
+            ignored, line, level, message = error.split(':', 3)
             # Scrape the Jing error messages to reword them more nicely.
             m = re.search(r'Expected "(.*?)" to terminate element starting on line (\d+)', message)
             if m: