fix busy device handle null

diff --git a/src/kds_s2000w_net.c b/src/kds_s2000w_net.c
index dfdd869bc8b942faf3f538c61841892db3096fb8..43d0f1110d6c95a5c11a8c6f21bdcf9bfe5e3ca0 100644 (file)
--- a/src/kds_s2000w_net.c
+++ b/src/kds_s2000w_net.c
@@ -59,12 +59,14 @@ SANE_Status _sane_kds_s2000w_net_open(SANE_String_Const devicename,
        if (h->state == NOTCONNECTED) {
                free_handler(h);
                h = NULL;
+               *handle = NULL;
                return SANE_STATUS_IO_ERROR;
        }
 
        if (h->state == BUSY) {
                free_handler(h);
                h = NULL;
+               *handle = NULL;
                return SANE_STATUS_DEVICE_BUSY;
        }
 
@@ -77,7 +79,7 @@ void _sane_kds_s2000w_net_close(SANE_Handle handle)
        debug_printf(ALL, "sane_kds_s2000w_net_close");
 
        handler* h = (handler*) handle;
-       if (h->state != OPENED)
+       if (h == NULL || h->state != OPENED)
                return;
 
        kds_s2000w_option_descriptor_free_option_descriptors();