make bit more effort to delete tmpbuf in `with-another-xyzzy`
make bit more effort to delete tmpbuf in `with-another-xyzzy`

kosh04/xyzzy,xyzzy-022/xyzzy,kosh04/xyzzy,NobuoK/xyzzy,kosh04/xyzzy,xyzzy-022/xyzzy,kosh04/xyzzy,NobuoK/xyzzy,kosh04/xyzzy,NobuoK/xyzzy,xyzzy-022/xyzzy,southly/xyzzy.src,NobuoK/xyzzy,southly/xyzzy.src,NobuoK/xyzzy,southly/xyzzy.src,xyzzy-022/xyzzy