checkpatch: Fix Python style violation.

I introduced this when updating the script before commit.  My fault, sorry.

Fixes: c599d5ccf31 (checkpatch.py: A simple script for finding patch issues)
Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/utilities/checkpatch.py b/utilities/checkpatch.py
index 5301c6b8e..d9011f370 100755
--- a/utilities/checkpatch.py
+++ b/utilities/checkpatch.py
@@ -185,6 +185,7 @@ def usage():
     print("-t|--skip-trailing-whitespace\t"
           "Skips the trailing whitespace test")
 
+
 def ovs_checkpatch_file(filename):
     try:
         mail = email.message_from_file(open(filename, 'r'))