Merge pull request #4758 from nigredo-tori/fix-asyncfd-send

Fix AsyncFD send

lib/pure/asyncdispatch.nim

@@ -1589,7 +1589,7 @@ proc send*(socket: AsyncFD, data: string,
                # or failed.
 
   let sendFut = socket.send(addr copiedData[0], data.len, flags)
-  sendFut.cb =
+  sendFut.callback =
     proc () =
       GC_unref(copiedData)
       if sendFut.failed:

tests/async/tasyncsend4757.nim

@@ -0,0 +1,14 @@
+discard """
+  file: "tasyncsend4754.nim"
+  output: "Finished"
+"""
+
+import asyncdispatch
+
+proc f(): Future[void] {.async.} =
+  let s = newAsyncNativeSocket()
+  await s.connect("example.com", 80.Port)
+  await s.send("123")
+  echo "Finished"
+
+waitFor f()