Fixed issue with reloadable libraries

main.lua

@@ -331,17 +331,30 @@ local function init_memebot ()
             shutdown_memebot()
             os.exit(128 + signum)
         end)
+	---
+	local RELOADABLE_LIBS  =  { 'config', 'internet', 'memes', 'curb_your_enthusiasm' }
+	local ORIG_TABLES      =  {}
+	for _, module_name in ipairs(RELOADABLE_LIBS) do
+            ORIG_TABLES[module_name]  =  require(module_name)
+	end
+	--
         signal.signal(signal.SIGUSR1, function (signum)
             io.write ' !! Received SIGUSR1, will reload modules...\n'
-            for _, module_name in ipairs { 'internet', 'memes', 'curb_your_enthusiasm' } do
-                local old_module  =  require(module_name)
+            for _, module_name in ipairs(RELOADABLE_LIBS) do
+		io.write('    - '..module_name)
                 package.loaded[module_name]  =  nil
                 local new_module  =  require(module_name)
-                for k, v in pairs(new_module) do
-                    old_module[k] = v
-                end
-                io.write('    - '..module_name..'\n')
+		if type(new_module) == 'table' then
+			local old_module  =  ORIG_TABLES[module_name]
+			for k, v in pairs(new_module) do
+			    old_module[k] = v
+			end
+		else
+                    io.write('   SKIP: Got '..tostring(new_module)..' but expected table.')
+		end
+                io.write '\n'
             end
+            io.write '    Done\n'
         end)
     else
         io.write ' !! Module "posix.signal" was missing, so CTRL+C will hard-crash.\n'