Fix dictionary crash walkthrough empty (#13051)

fix dictionary walkthrouhg crash when the dictionary is empty

1 files changed, 1 insertions, 1 deletions

diff --git a/libnetdata/dictionary/dictionary.c b/libnetdata/dictionary/dictionary.c
index bc1e872cbd..de182cb023 100644
--- a/libnetdata/dictionary/dictionary.c
+++ b/libnetdata/dictionary/dictionary.c
@@ -902,7 +902,7 @@ int dictionary_walkthrough_rw(DICTIONARY *dict, char rw, int (*callback)(const c
     // written in such a way, that the callback can delete the active element
 
     int ret = 0;
-    NAME_VALUE *nv = dict->first_item, *nv_next = nv->next;
+    NAME_VALUE *nv = dict->first_item, *nv_next;
     while(nv) {
         nv_next = nv->next;