ja4: check more ifdef HAVE_JA4

Avoids a unused macro warning

src/app-layer-ssl.c

@@ -186,7 +186,9 @@ enum {
 
 /* JA3 and JA4 fingerprints are disabled by default */
 #define SSL_CONFIG_DEFAULT_JA3 0
+#ifdef HAVE_JA4
 #define SSL_CONFIG_DEFAULT_JA4 0
+#endif
 
 enum SslConfigEncryptHandling {
     SSL_CNF_ENC_HANDLE_TRACK_ONLY = 0, /**< disable raw content, continue tracking */
@@ -3366,6 +3368,7 @@ void SSLEnableJA3(void)
  */
 void SSLEnableJA4(void)
 {
+    // only caller has #ifdef HAVE_JA4
     if (g_disable_hashing || ssl_config.disable_ja4) {
         return;
     }

src/output-json-tls.c

@@ -83,6 +83,7 @@ TlsFields tls_fields[] = {
     { "client", LOG_TLS_FIELD_CLIENT },
     { "client_certificate", LOG_TLS_FIELD_CLIENT_CERT },
     { "client_chain", LOG_TLS_FIELD_CLIENT_CHAIN },
+    // accept if as nop if we do not HAVE_JA4
     { "ja4", LOG_TLS_FIELD_JA4 },
     { "subjectaltname", LOG_TLS_FIELD_SUBJECTALTNAME },
     { "client_alpns", LOG_TLS_FIELD_CLIENT_ALPNS },