services: Add missing returns

service/clipboard.lua

@@ -15,3 +15,4 @@ function start()
    end
  end)
 end
+return {start=start}

service/screenblank.lua

@@ -21,5 +21,6 @@ function start()
     state = false
    end
   end
- end,"screenblank")
+ end, "screenblank")
 end
+return {start=start}

service/tape-devfs.lua

@@ -16,13 +16,19 @@ end
 for addr in component.list("tape_drive") do
  addNode(addr)
 end
-while true do
- local tE = {coroutine.yield()}
- if tE[1] == "component_added" and tE[3] == "tape_drive" then
-  addNode(tE[2])
- elseif tE[1] == "component_removed" and tE[3] == "tape_drive" then
-  if td[tE[2]] then
-   fs.remove("/dev/tape"..tostring(td[tE[2]]))
+
+function start()
+ return os.spawn(function()
+  while true do
+   local tE = {coroutine.yield()}
+   if tE[1] == "component_added" and tE[3] == "tape_drive" then
+    addNode(tE[2])
+   elseif tE[1] == "component_removed" and tE[3] == "tape_drive" then
+    if td[tE[2]] then
+     fs.remove("/dev/tape"..tostring(td[tE[2]]))
+    end
+   end
   end
- end
+ end, "tape-devfs")
 end
+return {start=start}

service/termsrv.lua

@@ -61,3 +61,4 @@ function start()
  end
  end,"termsrv")
 end
+return {start=start}

service/wolbeacon.lua

@@ -6,13 +6,18 @@ for modem in component.list("modem") do
  component.invoke(modem,"setWakeMessage",message)
 end
 
-local ltime = computer.uptime()
-while true do
- if computer.uptime() > ltime+delay then
-  for modem in component.list("modem") do
-   component.invoke(modem,"broadcast",port,message)
+function start()
+ return os.spawn(function()
+  local ltime = computer.uptime()
+  while true do
+   if computer.uptime() > ltime+delay then
+    for modem in component.list("modem") do
+     component.invoke(modem,"broadcast",port,message)
+    end
+    ltime=computer.uptime()
+   end
+   coroutine.yield()
   end
-  ltime=computer.uptime()
- end
- coroutine.yield()
+ end, "WoLBeacon")
 end
+return {start=start}