no option descriptor return null

diff --git a/src/kds_s2000w_option_descriptors.c b/src/kds_s2000w_option_descriptors.c
index db3097be3dd913844ffc1ca49cc8b17bb10dad2b..69b00e65cf81802555ba6728c94de391c78d8c9c 100644 (file)
--- a/src/kds_s2000w_option_descriptors.c
+++ b/src/kds_s2000w_option_descriptors.c
@@ -558,5 +558,8 @@ void kds_s2000w_option_descriptor_free_option_descriptors()
 SANE_Option_Descriptor* kds_s2000w_option_get_descriptor(int option)
 {
        debug_printf(ALL, "kds_s2000w_option_get_descriptor");
+       if (option >= MAX_OPTION_COUNT)
+               return NULL;
+
        return &descriptor_array[option];
 }
\ No newline at end of file