USB: yurex: kill needless initialization in yurex_read

This prevented the compiler from catching the patch
that broke the driver.

Signed-off-by: Oliver Neukum <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/misc/yurex.c

···
 			  loff_t *ppos)
 {
 	struct usb_yurex *dev;
-	int len = 0;
+	int len;
 	char in_buffer[20];
 	unsigned long flags;