Change one parm from pass-by-value to reference-to-const

Author: martinhsv

headers/modsecurity/rule_with_operator.h

@@ -56,7 +56,7 @@ class RuleWithOperator : public RuleWithActions {
         variables::Variables *eclusion, Transaction *trans);
 
     bool executeOperatorAt(Transaction *trasn, const std::string &key,
-        std::string value, std::shared_ptr<RuleMessage> rm);
+        const std::string &value, std::shared_ptr<RuleMessage> rm);
 
     static void updateMatchedVars(Transaction *trasn, const std::string &key,
         const std::string &value);

src/rule_with_operator.cc

@@ -101,7 +101,7 @@ void RuleWithOperator::cleanMatchedVars(Transaction *trans) {
 
 
 bool RuleWithOperator::executeOperatorAt(Transaction *trans, const std::string &key,
-    std::string value, std::shared_ptr<RuleMessage> ruleMessage) {
+    const std::string &value, std::shared_ptr<RuleMessage> ruleMessage) {
 #if MSC_EXEC_CLOCK_ENABLED
     clock_t begin = clock();
     clock_t end;