scout.c: only declare width once

scout.c: only declare width once

The width variable was declared twice, for the whole function
and also within the for loop, leaving the first one unused
and triggering a warning and a failed build with enable-checking.

Change-Id: Idd061aa0e9eff1f158bfdbd67a20fe5876570089
Reviewed-on: http://gerrit.openafs.org/2039
Reviewed-by: Russ Allbery <rra@stanford.edu>
Tested-by: Russ Allbery <rra@stanford.edu>