path.c: refactor and add worktree_git_path()

diff --git a/config.c b/config.c
index 7ddb28754cc6592fa349b2bfa3816085c9644261..4c926990a3002884ebf3c19ab0ea7fd4ea762364 100644 (file)
--- a/config.c
+++ b/config.c
@@ -162,7 +162,7 @@ void git_config_push_parameter(const char *text)
 {
        struct strbuf env = STRBUF_INIT;
        const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
-       if (old) {
+       if (old && *old) {
                strbuf_addstr(&env, old);
                strbuf_addch(&env, ' ');
        }