varcache: allow empty string for server-side variable.

Seems application_name is broken otherwise.

Reported-by: Tim Bunce

diff --git a/src/varcache.c b/src/varcache.c
index ea2fc29c41d2ed97025660384897d24cf0f1f37e..7a795cd42fd45a8067a1c17d0e221cb81cf8c881 100644 (file)
--- a/src/varcache.c
+++ b/src/varcache.c
@@ -67,8 +67,8 @@ set_value:
        strpool_decref(cache->var_list[lk->idx]);
        cache->var_list[lk->idx] = NULL;
 
-       /* ignore empty value */
-       if (!value || !value[0])
+       /* NULL value? */
+       if (!value)
                return false;
 
        /* set new value */