Fix memory management on the rules' messages

Author: Felipe Zimmerle

src/rule.cc

@@ -521,6 +521,8 @@ bool Rule::evaluate(Transaction *trasn) {
     if ((!m_log_message.empty() || !m_log_data.empty()) && !ruleMessage->m_match.empty()) {
         ruleMessage->m_data = m_log_data;
         trasn->m_rulesMessages.push_back(ruleMessage);
+    } else {
+        delete ruleMessage;
     }
 
     return ret;

src/transaction.cc

@@ -148,6 +148,10 @@ Transaction::~Transaction() {
     m_requestBody.str(std::string());
     m_requestBody.clear();
 
+    for (auto *a : m_rulesMessages) {
+        delete a;
+    }
+
     m_rules->decrementReferenceCount();
 }