Add missing return status check in sane_start(), preventing an ugly segfault later on.

ChangeLog

@@ -1,5 +1,7 @@
 2007-01-08  Julien Blache <jb@jblache.org>
 	* doc: fix man warnings.
+	* backend/microtek2.c: add missing return status check in
+	sane_start(), preventing an ugly segfault later on.
 
 2006-12-18  Alessandro Zummo <a.zummo@towertech.it>
 

backend/microtek2.c

@@ -5456,6 +5456,8 @@ sane_start(SANE_Handle handle)
             )
        )
         status = read_cx_shading(ms);
+        if ( status  != SANE_STATUS_GOOD )
+            goto cleanup;
         
     if ( ms->lightlid35 )  
     /* hopefully this leads to a switched off flatbed lamp with lightlid */