Staging: ft1000-usb: fix array overflow

The code here is supposed checking if we exited the loop without hitting
a break.  The problem is that in the error handling "i" is out of bounds
and it corrupts memory when we do an info->app_info[i].nRxMsgMiss++.
>From the comments, it looks like someone noticed this corruption and
updated the code, but didn't totally fix the problem.  The correct fix
is just to remove nRxMsgMiss++ from the error path.

I believe this bug can be triggered remotely.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>