detect: suppress error message for pcre only rules

(cherry picked from commit 9dd1444f4431731bf4917488e0abec0d9a46fdcc)

diff --git a/src/detect-parse.c b/src/detect-parse.c
index 85b4e7464b384e1eec0b5ac8ea6e8942f5fe694a..782ba840a20c1ce20f1c8c68b0e8bc901c117249 100644 (file)
--- a/src/detect-parse.c
+++ b/src/detect-parse.c
@@ -624,10 +624,11 @@ static void SigMatchTransferSigMatchAcrossLists(SigMatch *sm,
 
 int SigMatchListSMBelongsTo(const Signature *s, const SigMatch *key_sm)
 {
-    const int nlists = s->init_data->smlists_array_size;
-    int list = 0;
+    if (key_sm == NULL)
+        return -1;
 
-    for (list = 0; list < nlists; list++) {
+    const int nlists = s->init_data->smlists_array_size;
+    for (int list = 0; list < nlists; list++) {
         const SigMatch *sm = s->init_data->smlists[list];
         while (sm != NULL) {
             if (sm == key_sm)