server: Clear the connection error after a successful connection.

dlls/ws2_32/tests/sock.c

@@ -3344,7 +3344,7 @@ static void test_select(void)
         id = 0xdeadbeef;
         ret = getsockopt(fdWrite, SOL_SOCKET, SO_ERROR, (char *)&id, &len);
         ok(!ret, "getsockopt failed with %d\n", WSAGetLastError());
-        todo_wine ok(!id, "got error %u\n", id);
+        ok(!id, "got error %u\n", id);
 
         closesocket(fdWrite);
 

server/sock.c

@@ -983,7 +983,10 @@ static void sock_dispatch_events( struct sock *sock, enum connection_state prevs
 
     case SOCK_CONNECTING:
         if (event & POLLOUT)
+        {
             post_socket_event( sock, AFD_POLL_BIT_CONNECT, 0 );
+            sock->errors[AFD_POLL_BIT_CONNECT_ERR] = 0;
+        }
         if (event & (POLLERR | POLLHUP))
             post_socket_event( sock, AFD_POLL_BIT_CONNECT_ERR, error );
         break;