Changes debuglogs schema to avoid unecessary str allocation

src/operators/rx.cc

@@ -60,10 +60,8 @@ bool Rx::evaluate(Transaction *transaction, Rule *rule,
         for (const SMatch& a : matches) {
             transaction->m_collections.m_tx_collection->storeOrUpdateFirst(
                 std::to_string(i), a.match);
-#ifndef NO_LOGS
-            transaction->debug(7, "Added regex subexpression TX." +
+            ms_dbg_a(transaction, 7, "Added regex subexpression TX." +
                 std::to_string(i) + ": " + a.match);
-#endif
             transaction->m_matched.push_back(a.match);
             i++;
         }