config: fix null dereference in MacSetRegisterFlowStorage

Crash happens with
--set outputs.eve-json.types.files.force-magic=yes

diff --git a/src/util-macset.c b/src/util-macset.c
index 81a40a8c42e1c0a00fd05a5d29fa142869f4cc5c..56d7539af698079316d7ad80404cea66555813e6 100644 (file)
--- a/src/util-macset.c
+++ b/src/util-macset.c
@@ -66,7 +66,7 @@ void MacSetRegisterFlowStorage(void)
        has the ethernet setting enabled */
     if (root != NULL) {
         TAILQ_FOREACH(node, &root->head, next) {
-            if (strcmp(node->val, "eve-log") == 0) {
+            if (node->val && strcmp(node->val, "eve-log") == 0) {
                 const char *enabled = ConfNodeLookupChildValue(node->head.tqh_first, "enabled");
                 if (enabled != NULL && ConfValIsTrue(enabled)) {
                     const char *ethernet = ConfNodeLookupChildValue(node->head.tqh_first, "ethernet");