init: use spaces consistently (no mixed tabs), required in Python 3 (PEP8 E101, W191, see https://trac.osgeo.org/grass/ticket/2708)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@71832 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/init/grass.py

@@ -1710,7 +1710,7 @@ def print_params():
             filerev.close()
             sys.stdout.write("%s\n" % val[0].split(':')[1].rstrip('$"\n').strip())
         elif arg == 'version':
-			sys.stdout.write("%s\n" % grass_version)
+            sys.stdout.write("%s\n" % grass_version)
         else:
             message(_("Parameter <%s> not supported") % arg)