Merge branch 'av220d2' into 'master'

avision: Make scanning multiple sheets work for AV220D2+

Closes #453

See merge request sane-project/backends!603

backend/avision.c

@@ -6948,6 +6948,7 @@ do_eof (Avision_Scanner *s)
 
   /* we do not scan anymore */
   s->prepared = s->scanning = SANE_FALSE;
+  s->page = 0;
 
   /* we can now mark the rear data as valid */
   if (s->avdimen.interlaced_duplex ||