Avoid useless host automa lookup (#1724)

The host automa is used for two tasks:
* protocol sub-classification (obviously);
* DGA evaluation: the idea is that if a domain is present in this
automa, it can't be a DGA, regardless of its format/name.

In most dissectors both checks are executed, i.e. the code is something
like:

```
ndpi_match_host_subprotocol(..., flow->host_server_name, ...);
ndpi_check_dga_name(..., flow->host_server_name,...);

```

In that common case, we can perform only one automa lookup: if we check the
sub-classification before the DGA, we can avoid the second lookup in
the DGA function itself.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/dga/dga_evaluate.c b/tests/dga/dga_evaluate.c
index fb32075db..98cc6a2b1 100644
--- a/tests/dga/dga_evaluate.c
+++ b/tests/dga/dga_evaluate.c
@@ -80,7 +80,7 @@ int main(int argc, char **argv) {
   while(fgets(buffer, sizeof(buffer), fd) != NULL) {
     char *hostname = strtok(buffer, "\n");
     
-    if(ndpi_check_dga_name(ndpi_str, NULL, hostname, 1)) {
+    if(ndpi_check_dga_name(ndpi_str, NULL, hostname, 1, 1)) {
       if(verbose)
 	printf("%10s\t%s\n", "[DGA]", hostname);