git-svn: fix test for trunk svn (transaction out of date)

Older svn clients did not raise a 'transaction out of date' error here, but
trunk does - so 'svn up'.

Signed-off-by: Sam Vilain <sam.vilain@catalyst.net.nz>
Acked-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9101-git-svn-props.sh

@@ -140,6 +140,7 @@ test_expect_success 'test show-ignore' "
 	cd test_wc &&
 	mkdir -p deeply/nested/directory &&
 	svn add deeply &&
+	svn up &&
 	svn propset -R svn:ignore 'no-such-file*' .
 	svn commit -m 'propset svn:ignore'
 	cd .. &&