swss/orchagent : Fixed the case of removing ip address from the inter…

…face.

1. Incorrect ip prefix parsing is fixed.
2. IntfsTable map is updated after removal of ip address from the interface.

Signed-off-by: Denys Haryachyy <Denys.Haryachyy@caviumnetworks.com>

orchagent/intfsorch.cpp

@@ -123,16 +123,6 @@ void IntfsOrch::doTask()
                 continue;
             }
 
-            IpPrefix ip_prefix;
-            for (auto it = kfvFieldsValues(t).begin();
-                 it  != kfvFieldsValues(t).end(); it++)
-            {
-                if (fvField(*it) == "ip_prefix")
-                {
-                    ip_prefix = IpPrefix(fvValue(*it));
-                }
-            }
-
             sai_unicast_route_entry_t unicast_route_entry;
             unicast_route_entry.vr_id = gVirtualRouterId;
             unicast_route_entry.destination.addr_family = SAI_IP_ADDR_FAMILY_IPV4;
@@ -159,7 +149,11 @@ void IntfsOrch::doTask()
                 it++;
             }
             else
+            {
+                SWSS_LOG_NOTICE("Remove packet action trap route ip:%s\n", ip_prefix.getIp().to_string().c_str());
+                m_intfs.erase(alias);
                 it = m_toSync.erase(it);
+            }
         }
     }
 }