[Fix] Setting check_local / check_authed in plugins (#1954)

src/plugins/lua/dmarc.lua

 end
 
 local opts = rspamd_config:get_all_opt('options')
-if opts and type(opts) ~= 'table' then
+if type(opts) == 'table' then
   if type(opts['check_local']) == 'boolean' then
     check_local = opts['check_local']
   end

src/plugins/lua/hfilter.lua

 }
 
 local opts = rspamd_config:get_all_opt('options')
-if opts and type(opts) ~= 'table' then
+if type(opts) == 'table' then
   if type(opts['check_local']) == 'boolean' then
     check_local = opts['check_local']
   end

src/plugins/lua/ip_score.lua

 -- Configuration options
 local configure_ip_score_module = function()
   local opts = rspamd_config:get_all_opt('options')
-  if opts and type(opts) ~= 'table' then
+  if type(opts) == 'table' then
     if type(opts['check_authed']) == 'boolean' then
       check_authed = opts['check_authed']
     end

src/plugins/lua/once_received.lua

 end
 
 local opts = rspamd_config:get_all_opt('options')
-if opts and type(opts) ~= 'table' then
+if type(opts) == 'table' then
   if type(opts['check_local']) == 'boolean' then
     check_local = opts['check_local']
   end