* #29736: presence: pass strings as references

daemon/src/sip/pres_sub_client.cpp

@@ -327,10 +327,10 @@ std::string PresSubClient::getLineStatus()
     return std::string(status_.info[0].rpid.note.ptr, status_.info[0].rpid.note.slen);
 }
 
-bool PresSubClient::isTermReason(std::string reason)
+bool PresSubClient::isTermReason(const std::string &reason)
 {
-    std::string myReason(term_reason_.ptr, term_reason_.slen);
-    return !myReason.compare(reason);
+    const std::string myReason(term_reason_.ptr, term_reason_.slen);
+    return not myReason.compare(reason);
 }
 
 void PresSubClient::rescheduleTimer(bool reschedule, unsigned msec)

daemon/src/sip/pres_sub_client.h

@@ -155,7 +155,7 @@ class PresSubClient {
         /*
          * Compare the reason of a transaction end with the given string.
          */
-        bool isTermReason(std::string);
+        bool isTermReason(const std::string &);
         /**
          * return the code after a transaction is terminated.
          */