eliminate some cats
I usually don't care about 'useless use of cat' awards, since most
fragments people complain about are copy-pasted from an interactive
session that goes something like
$ cat some/long/path
<whoops, way more than I expected. Ctrl-C>
[up-arrow, append "|less" is easier than the alternatives]
However, smatch_warns.txt is already more than 1GB, even for a
defconfig build, and smatch gets smarter and smarter. So at least in
these two cases, it may be worth fixing.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>