config: fix null dereference in MacSetRegisterFlowStorage

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

(cherry picked from commit 8bf653054025e6297f05ec211a0baa44cf795704)

diff --git a/src/util-macset.c b/src/util-macset.c
index 30e6c6b3439cccf5345d4c51ea8621fb3ad64e90..fbffd6ce5c505a6d79bf509e9080348bee1ca7bd 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");