Catching errors where we are passing invalid attributes

We need to pass :task down for some functionality in pro.
while the error is valid we really shouldnt be passing the task all the way down if its blank but we need
the check there or we will end up with the same problem with pro.

lib/msf/core/db_manager/host.rb

@@ -170,7 +170,7 @@ module Msf::DBManager::Host
     else
       host = addr
     end
-
+    
     # Truncate the info field at the maximum field length
     if opts[:info]
       opts[:info] = opts[:info][0,65535]
@@ -196,6 +196,8 @@ module Msf::DBManager::Host
         unless host.attribute_locked?(k.to_s)
           host[k] = v.to_s.gsub(/[\x00-\x1f]/n, '')
         end
+      elsif v.blank?
+        # eating blank attributes that dont exist
       else
         dlog("Unknown attribute for ::Mdm::Host: #{k}")
       end

lib/msf/core/db_manager/service.rb

@@ -92,6 +92,8 @@ module Msf::DBManager::Service
     opts.each { |k,v|
       if (service.attribute_names.include?(k.to_s))
         service[k] = ((v and k == :name) ? v.to_s.downcase : v)
+      elsif v.blank?
+        # eating blank attributes that dont exist
       else
         dlog("Unknown attribute for Service: #{k}")
       end