ntoskrnl.exe: Set the IRP output buffer unless the status has both high bits set.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -439,7 +439,7 @@ static NTSTATUS WINAPI dispatch_irp_completion( DEVICE_OBJECT *device, IRP *irp,
         req->handle   = wine_server_obj_handle( irp_handle );
         req->status   = irp->IoStatus.u.Status;
         req->size     = irp->IoStatus.Information;
-        if (irp->IoStatus.u.Status >= 0)
+        if (!NT_ERROR(irp->IoStatus.u.Status))
         {
             if (out_buff) wine_server_add_data( req, out_buff, irp->IoStatus.Information );
         }

dlls/ntoskrnl.exe/tests/ntoskrnl.c

@@ -444,7 +444,7 @@ static void test_return_status(void)
             sizeof(status), buffer, sizeof(buffer), &ret_size, NULL);
     ok(!ret, "ioctl succeeded\n");
     ok(GetLastError() == ERROR_MR_MID_NOT_FOUND, "got error %u\n", GetLastError());
-    todo_wine ok(!strcmp(buffer, "ghidef"), "got buffer %s\n", buffer);
+    ok(!strcmp(buffer, "ghidef"), "got buffer %s\n", buffer);
     ok(ret_size == 3, "got size %u\n", ret_size);
 
     strcpy(buffer, "abcdef");