USB: usb-storage: fix bug in fill_inquiry

commit f3f6faa9 upstream.

This patch (as1312) fixes a minor bug in usb-storage.  The
fill_inquiry() routine neglects to pre-load the inquiry data buffer
with spaces.  As a result, if the vendor name is shorter than 8
characters or the product name is shorter than 16, the remainder will
be filled with garbage.

The patch also removes some unnecessary calls to strlen().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>