Make sure ev_io_stop before ev_io_set

src/resolv.c

@@ -460,12 +460,9 @@ static void
 resolv_sock_state_cb(void *data, int s, int read, int write)
 {
     struct resolv_ctx *ctx = (struct resolv_ctx *)data;
-    int io_active          = ev_is_active(&ctx->io);
 
     if (read || write) {
-        if (io_active && ctx->io.fd != s) {
-            ev_io_stop(default_loop, &ctx->io);
-        }
+        ev_io_stop(default_loop, &ctx->io);
         ev_io_set(&ctx->io, s, (read ? EV_READ : 0) | (write ? EV_WRITE : 0));
         ev_io_start(default_loop, &ctx->io);
     } else {