submodule: don't rely on overlayed config when setting diffopts

diff --git a/t/t4041-diff-submodule-option.sh b/t/t4041-diff-submodule-option.sh
index 2d9731b52d6b880d742e4722ddcc404c59e5f1bd..058ee0829ded8163f99325494f326ef6609fee06 100755 (executable)
--- a/t/t4041-diff-submodule-option.sh
+++ b/t/t4041-diff-submodule-option.sh
@@ -430,9 +430,11 @@ test_expect_success 'deleted submodule' '
        test_cmp expected actual
 '
 
-test_create_repo sm2 &&
-head7=$(add_file sm2 foo8 foo9) &&
-git add sm2
+test_expect_success 'create second submodule' '
+       test_create_repo sm2 &&
+       head7=$(add_file sm2 foo8 foo9) &&
+       git add sm2
+'
 
 test_expect_success 'multiple submodules' '
        git diff-index -p --submodule=log HEAD >actual &&