minor cleanups and changelog entry

ChangeLog

@@ -1,3 +1,8 @@
+2011-01-31 Stéphane Voltz <stef.dev@free.fr>
+	* backend/genesys.c backend/genesys_low.[ch]: don't return EOF too
+	early when applying image processing functions, handle writing of
+	lineart data, improve asynchronous head parking
+
 2011-01-31 m. allan noah <kitno455 at gmail dot com>
 	* backend/epjitsu.c, doc/descriptions/epjitsu.desc:
 	- comment changes

backend/genesys.c

@@ -7166,8 +7166,6 @@ sane_close (SANE_Handle handle)
   Genesys_Scanner *prev, *s;
   Genesys_Calibration_Cache *cache, *next_cache;
   SANE_Status status;
-  uint8_t val;
-  int loop;
 
   DBG (DBG_proc, "sane_close: start\n");