fixes yet another LL regression (Aporia compiles again)

compiler/lambdalifting.nim

@@ -362,6 +362,7 @@ proc detectCapturedVars(n: PNode; owner: PSym; c: var DetectionPass) =
       # this handles the case that the inner proc was declared as
       # .closure but does not actually capture anything:
       addClosureParam(c, s)
+      c.somethingToDo = true
 
     let innerProc = isInnerProc(s)
     if innerProc:
@@ -654,7 +655,6 @@ proc wrapIterBody(n: PNode; owner: PSym): PNode =
 proc symToClosure(n: PNode; owner: PSym; d: DetectionPass;
                   c: var LiftingPass): PNode =
   let s = n.sym
-
   if s == owner:
     # recursive calls go through (lambda, hiddenParam):
     let available = getHiddenParam(owner)

tests/closure/texplicit_dummy_closure.nim

@@ -0,0 +1,22 @@
+
+# This is a regression of the new lambda lifting; detected by Aporia
+import asyncio, sockets
+import os
+
+type
+  Window = object
+    oneInstSock*: PAsyncSocket
+    IODispatcher*: PDispatcher
+
+var
+  win: Window
+
+proc initSocket() =
+  win.oneInstSock = asyncSocket()
+  #win.oneInstSock.handleAccept =
+  proc test(s: PAsyncSocket) =
+    var client: PAsyncSocket
+    proc dummy(c: PAsyncSocket) {.closure.} =
+      discard
+    client.handleRead = dummy
+  test(win.oneInstSock)