fuzz: restrict flags passed to AppLayerProtoDetectGetProto

Completes commit 05f9b3ffc6

src/tests/fuzz/fuzz_applayerprotodetectgetproto.c

@@ -68,7 +68,8 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
          * Otherwise, we have evasion with TCP splitting
          */
         for (size_t i = 0; i < size-HEADER_LEN && i < PROTO_DETECT_MAX_LEN; i++) {
-            alproto2 = AppLayerProtoDetectGetProto(alpd_tctx, f, data+HEADER_LEN, i, f->proto, data[0], &reverse);
+            alproto2 = AppLayerProtoDetectGetProto(
+                    alpd_tctx, f, data + HEADER_LEN, i, f->proto, flags, &reverse);
             if (alproto2 != ALPROTO_UNKNOWN && alproto2 != alproto) {
                 printf("Failed with input length %" PRIuMAX " versus %" PRIuMAX
                        ", found %s instead of %s\n",