check_filename: tighten dwim-wildcard ambiguity

diff --git a/t/t7009-filter-branch-null-sha1.sh b/t/t7009-filter-branch-null-sha1.sh
index a997f7ac3a44c2e47274b59568370ebb607fff31..c27f90f285faf0529f08fae7262a40b605bd7375 100755 (executable)
--- a/t/t7009-filter-branch-null-sha1.sh
+++ b/t/t7009-filter-branch-null-sha1.sh
@@ -13,7 +13,7 @@ test_expect_success 'setup: a commit with a bogus null sha1 in the tree' '
        {
                git ls-tree HEAD &&
                printf "160000 commit $_z40\\tbroken\\n"
-       } >broken-tree
+       } >broken-tree &&
        echo "add broken entry" >msg &&
 
        tree=$(git mktree <broken-tree) &&