[PATCH] USB: drivers/usb/misc/sisusbvga/sisusb.c: remove dead code

The Coverity checker found this dead code.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/misc/sisusbvga/sisusb.c

@@ -863,9 +863,6 @@ static int sisusb_write_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
 
 	    switch (length) {
 
-		case 0:
-			return ret;
-
 		case 1:
 			if (userbuffer) {
 				if (get_user(swap8, (u8 __user *)userbuffer))
@@ -1221,9 +1218,6 @@ static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
 
 	    switch (length) {
 
-		case 0:
-			return ret;
-
 		case 1:
 
 			ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM,