avoid redefinition warning

ChangeLog

@@ -5,6 +5,7 @@
 	if libjpeg is unavailable.
 	* backend/hs2p-scsi.c: format fix.
 	* backend/hs2p.c: fix missing return.
+	* backend/canon630u-common.c: avoid redefinition warning.
 
 2009-01-31 Chris Bagwell <cbagwell-guest at users.alioth.debian.org>
 	* backend/Makefil.am: Add missing math library to coolscan2

backend/canon630u-common.c

@@ -66,7 +66,7 @@
 
 #define USB_TYPE_VENDOR                 (0x02 << 5)
 #define USB_RECIP_DEVICE                0x00
-#define USB_DIR_OUT                     0
+#define USB_DIR_OUT                     0x00
 #define USB_DIR_IN                      0x80
 
 /* Assign status and verify a good return code */