treewide: Fix recent flake8-check.

Without this patch, I see errors like this on master:
../ofproto/ipfix-gen-entities:115:1: E305 expected 2 blank lines after
class or function definition, found 1

Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Daniele Di Proietto <diproiettod@vmware.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/utilities/ovs-pcap.in b/utilities/ovs-pcap.in
index 2e9197d15..c43acb52e 100755
--- a/utilities/ovs-pcap.in
+++ b/utilities/ovs-pcap.in
@@ -55,6 +55,8 @@ class PcapReader(object):
         if len(packet) != incl_len:
             raise PcapException("end of file reading pcap packet data")
         return packet
+
+
 argv0 = sys.argv[0]
 
 
@@ -70,6 +72,7 @@ The following options are also available:
 """ % {'argv0': argv0})
     sys.exit(0)
 
+
 if __name__ == "__main__":
     try:
         try: