usb: gadget: rndis: don't duplicate the "i" variable

If CONFIG_USB_GADGET_DEBUG_FILES is set then a block is opened and inside
it there is a local variable "i" which hides the "i" local to the
rndis_deregister(). Consequently, a random value is formatted
into the "name" buffer.

This patch removes the block-local i.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/function/rndis.c

@@ -934,7 +934,6 @@ void rndis_deregister(struct rndis_params *params)
 
 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
 	{
-		u8 i;
 		char name[20];
 
 		sprintf(name, NAME_TEMPLATE, i);