fix: use std::make_shared in simple cases to reduce allocation

src/qtgui/main.cpp

@@ -32,6 +32,7 @@
 #include <QFileDialog>
 #include <QUrl>
 #include <QSettings>
+#include <memory>
 
 #include "rcldb.h"
 #include "rclconfig.h"
@@ -100,7 +101,7 @@ bool maybeOpenDb(string &reason, bool force, bool *maindberror)
     LOGDEB1("maybeOpenDb: force " << force << "\n");
 
     if (force || nullptr == rcldb) {
-        rcldb = std::shared_ptr<Rcl::Db>(new Rcl::Db(theconfig));
+        rcldb = std::make_shared<Rcl::Db>(theconfig);
     }
     rcldb->rmQueryDb("");
     auto edbs = &prefs.activeExtraDbs;

src/qtgui/rclm_view.cpp

@@ -22,6 +22,7 @@
 
 #include <QMessageBox>
 #include <QSettings>
+#include <memory>
 
 #include "qxtconfirmationmessage.h"
 
@@ -75,7 +76,7 @@ void RclMain::viewUrl()
     Rcl::Query *query = new Rcl::Query(rcldb.get());
     DocSequenceDb *src = new DocSequenceDb(
         rcldb, std::shared_ptr<Rcl::Query>(query), "", 
-        std::shared_ptr<Rcl::SearchData>(new Rcl::SearchData));
+        std::make_shared<Rcl::SearchData>());
     m_source = std::shared_ptr<DocSequence>(src);
 
 

src/qtgui/xmltosd.cpp

@@ -22,6 +22,8 @@
 #include "guiutils.h"
 #include "log.h"
 #include "xmltosd.h"
+
+#include <memory>
 #include "smallut.h"
 #include "recoll.h"
 #include "picoxml.h"
@@ -51,7 +53,7 @@ public:
             }
             resetTemps();
             // A new search descriptor. Allocate data structure
-            sd = std::shared_ptr<SearchData>(new SearchData);
+            sd = std::make_shared<SearchData>();
             if (!sd) {
                 LOGERR("SDHXMLHandler::startElement: out of memory\n");
                 contentsOk = false;