VOM: route-domain find() fix

Change-Id: I5b7117f3568e3ba979baa15521b2cfc180abb682
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
diff --git a/src/vpp-api/vom/route_domain.hpp b/src/vpp-api/vom/route_domain.hpp
index 7d83154..19a3c18 100644
--- a/src/vpp-api/vom/route_domain.hpp
+++ b/src/vpp-api/vom/route_domain.hpp
@@ -81,7 +81,7 @@
   /**
    * Find the instnace of the route domain in the OM
    */
-  static std::shared_ptr<route_domain> find(const route_domain& temp);
+  static std::shared_ptr<route_domain> find(const key_t& temp);
 
   /**
    * Dump all route-doamin into the stream provided