Replace unsetenv() and setenv() with older putenv().

diff --git a/git-log-script b/git-log-script
index 24d1e83949a8eebb3cf6f8785f681c14ecd1115e..9260f920559578feac9922a7c2ef781252567952 100755 (executable)
--- a/git-log-script
+++ b/git-log-script
@@ -1,5 +1,4 @@
 #!/bin/sh
-. git-sh-setup-script || die "Not a git archive"
-revs=$(git-rev-parse --revs-only --default HEAD "$@")
+revs=$(git-rev-parse --revs-only --default HEAD "$@") || exit
 [ "$revs" ] || die "No HEAD ref"
 git-rev-list --pretty $(git-rev-parse --default HEAD "$@") | LESS=-S ${PAGER:-less}