* Fixed segmentation fault on invalid option passed to

sane_get_option_descriptor(), sane_control_option()
  (thanks to Albert Cervera i Areny)

ChangeLog

@@ -1,3 +1,9 @@
+2008-06-19 Ilia Sotnikov <hostcc@gmail.com>
+	* backend/hp5590.c:
+	Fixed segmentation fault on invalid option passed to
+	sane_get_option_descriptor(), sane_control_option()
+	(thanks to Albert Cervera i Areny)
+
 2008-06-19 Ilia Sotnikov <hostcc@gmail.com>
 	* backend/hp5590.c, backend/hp5590_cmds.c, backend/hp5590_cmds.h
 	* backend/hp5590_low.c, backend/hp5590_low.h

backend/hp5590.c

@@ -620,6 +620,9 @@ sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
 
   DBG (DBG_proc, "%s, option: %u\n", __FUNCTION__, option);
 
+  if (option >= HP5590_OPT_LAST)
+    return NULL;
+
   return &scanner->opts[option];
 }
 
@@ -637,6 +640,9 @@ sane_control_option (SANE_Handle handle, SANE_Int option,
   if (!handle)
     return SANE_STATUS_INVAL;
  
+  if (option >= HP5590_OPT_LAST)
+    return SANE_STATUS_INVAL;
+
   if (action == SANE_ACTION_GET_VALUE)
     {
       if (option == HP5590_OPT_NUM)