sr-mcast NPE fix on vlan change

Change-Id: I9523e750fdb5fd76cf120ee2e64f3c63471c8132
(cherry picked from commit f053484c4a3310d93bbddfb4c8872cacebeb33c6)
1 file changed
tree: 461a9f58261eec9a6aced4cea2cded4ea5967dd8
  1. BUCK
  2. app/
  3. pom.xml
  4. web/