detect: don't print (null) in --list-keywords=all

diff --git a/src/detect.c b/src/detect.c
index 3ae6e0f8605fc7577760d4e60e9b5f911f6992e3..7a779f3ae4aedf0e0c410c2f09baf43cfb15970f 100644 (file)
--- a/src/detect.c
+++ b/src/detect.c
@@ -4256,8 +4256,10 @@ void SigTableList(const char *keyword)
         }
     } else if (!strcmp("all", keyword)) {
         for (i = 0; i < size; i++) {
-            printf("%s:\n", sigmatch_table[i].name);
-            SigMultilinePrint(i, "\t");
+            if (sigmatch_table[i].name != NULL) {
+                printf("%s:\n", sigmatch_table[i].name);
+                SigMultilinePrint(i, "\t");
+            }
         }
     } else {
         for (i = 0; i < size; i++) {