list-objects.c: don't add an unparsed NULL as a pending tree

diff --git a/t/t7502-commit.sh b/t/t7502-commit.sh
index c25eff9e468acd628cf0a5e7a0968c801396e9f8..3eb9faedcf75c7b8a535b369e5a19107c6e81026 100755 (executable)
--- a/t/t7502-commit.sh
+++ b/t/t7502-commit.sh
@@ -141,8 +141,8 @@ test_expect_success 'cleanup commit messages (strip,-F)' '
 
 echo "sample
 
-# Please enter the commit message for your changes.
-# (Comment lines starting with '#' will not be included)" >expect
+# Please enter the commit message for your changes. Lines starting
+# with '#' will be ignored, and an empty message aborts the commit." >expect
 
 test_expect_success 'cleanup commit messages (strip,-F,-e)' '
 
@@ -228,10 +228,12 @@ EOF
 
 test_expect_success 'a SIGTERM should break locks' '
        echo >>negative &&
-       "$SHELL_PATH" -c '\''
+       ! "$SHELL_PATH" -c '\''
          echo kill -TERM $$ >> .git/FAKE_EDITOR
-         GIT_EDITOR=.git/FAKE_EDITOR exec git commit -a'\'' && exit 1  # should fail
-       ! test -f .git/index.lock
+         GIT_EDITOR=.git/FAKE_EDITOR
+         export GIT_EDITOR
+         exec git commit -a'\'' &&
+       test ! -f .git/index.lock
 '
 
 rm -f .git/MERGE_MSG .git/COMMIT_EDITMSG