Enhance race condition workaround in report_host

lib/msf/core/db_manager/host.rb

@@ -258,9 +258,9 @@ module Msf::DBManager::Host
         msf_import_timestamps(opts, host)
         host.save!
       end
-    rescue ActiveRecord::RecordNotUnique
-      # two concurrent report requests for a new host could result in a RecordNotUnique exception
-      # simply retry the report once more as an optimistic approach
+    rescue ActiveRecord::RecordNotUnique, ActiveRecord::RecordInvalid
+      # two concurrent report requests for a new host could result in a RecordNotUnique or
+      # RecordInvalid exception, simply retry the report once more as an optimistic approach
       retry if (retry_attempts+=1) <= 1
       raise
     end