Make recent versions of pep8 happy

Fixes:

| grml2usb:71:1: E305 expected 2 blank lines after class or function definition, found 1

as reported by pep8 v2.2.0 (though not yet with v1.6.2)
in our source-test job on Jenkins.

diff --git a/grml2usb b/grml2usb
index 4fc9b37..1c2ed5b 100755 (executable)
--- a/grml2usb
+++ b/grml2usb
@@ -67,6 +67,7 @@ def grub_option(option, opt, value, opt_parser):
     setattr(opt_parser.values, option.dest, True)
     setattr(opt_parser.values, 'syslinux', False)
 
+
 # cmdline parsing
 USAGE = "Usage: %prog [options] <[ISO[s] | /lib/live/mount/medium]> </dev/sdX#>\n\
 \n\