fixes yet another LL regression (Aporia compiles again)

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)