lstat_cache: optionally return match_len

diff --git a/environment.c b/environment.c
index de5581fe51d532231b0121bd2ef2e46669015bda..18aded6dc433ebc19c8b34e8ebcf59979a1985f6 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -87,6 +87,7 @@ const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
 static void setup_git_env(void)
 {
        git_dir = getenv(GIT_DIR_ENVIRONMENT);
+       git_dir = git_dir ? xstrdup(git_dir) : NULL;
        if (!git_dir) {
                git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
                git_dir = git_dir ? xstrdup(git_dir) : NULL;