Replace QScopedPointer with std::unqiue_ptr

These 2 types are very similar and we should prefer the one from C++
standard library, this reduces the number of types in our code base.

Also see:
https://stackoverflow.com/questions/40346393/should-i-use-qscopedpointer-or-stdunique-ptr#comment67966940_40346991

src/app/main.cpp

@@ -30,13 +30,13 @@
 #include <QtGlobal>
 
 #include <cstdlib>
+#include <memory>
 
 #if !defined Q_OS_WIN && !defined Q_OS_HAIKU
 #include <unistd.h>
 #endif
 
 #include <QDebug>
-#include <QScopedPointer>
 #include <QThread>
 
 #ifndef DISABLE_GUI
@@ -117,7 +117,7 @@ int main(int argc, char *argv[])
     try {
         // Create Application
         const QString appId = QLatin1String("qBittorrent-") + Utils::Misc::getUserIDString();
-        QScopedPointer<Application> app(new Application(appId, argc, argv));
+        std::unique_ptr<Application> app(new Application(appId, argc, argv));
 
         const QBtCommandLineParameters params = app->commandLineArgs();
 

src/base/profile.cpp

@@ -29,8 +29,6 @@
 
 #include "profile.h"
 
-#include <QCoreApplication>
-
 #include "private/profile_p.h"
 
 Profile *Profile::m_instance = nullptr;
@@ -50,14 +48,14 @@ Profile::~Profile() = default;
 void Profile::initialize(const QString &rootProfilePath, const QString &configurationName,
                          bool convertPathsToProfileRelative)
 {
-    QScopedPointer<Private::Profile> profile(rootProfilePath.isEmpty()
+    std::unique_ptr<Private::Profile> profile(rootProfilePath.isEmpty()
                                              ? static_cast<Private::Profile *>(new Private::DefaultProfile(configurationName))
                                              : static_cast<Private::Profile *>(new Private::CustomProfile(rootProfilePath, configurationName)));
 
-    QScopedPointer<Private::PathConverter> converter(convertPathsToProfileRelative
+    std::unique_ptr<Private::PathConverter> converter(convertPathsToProfileRelative
                                                      ? static_cast<Private::PathConverter *>(new Private::Converter(profile->baseDirectory()))
                                                      : static_cast<Private::PathConverter *>(new Private::NoConvertConverter()));
-    m_instance = new Profile(profile.take(), converter.take());
+    m_instance = new Profile(profile.release(), converter.release());
 }
 
 const Profile &Profile::instance()

src/base/profile.h

@@ -32,7 +32,6 @@
 
 #include <memory>
 
-#include <QScopedPointer>
 #include <QSettings>
 #include <QString>
 
@@ -78,8 +77,8 @@ private:
                                              bool convertPathsToProfileRelative);
     void ensureDirectoryExists(SpecialFolder folder);
 
-    QScopedPointer<Private::Profile> m_profileImpl;
+    const std::unique_ptr<Private::Profile> m_profileImpl;
-    QScopedPointer<Private::PathConverter> m_pathConverterImpl;
+    const std::unique_ptr<Private::PathConverter> m_pathConverterImpl;
     static Profile *m_instance;
 };
 

src/base/rss/rss_feed.cpp

@@ -39,7 +39,6 @@
 #include <QJsonDocument>
 #include <QJsonObject>
 #include <QJsonValue>
-#include <QScopedPointer>
 #include <QUrl>
 
 #include "../asyncfilestorage.h"

src/gui/addnewtorrentdialog.h

@@ -29,8 +29,9 @@
 #ifndef ADDNEWTORRENTDIALOG_H
 #define ADDNEWTORRENTDIALOG_H
 
+#include <memory>
+
 #include <QDialog>
-#include <QScopedPointer>
 #include <QShortcut>
 
 #include "base/bittorrent/addtorrentparams.h"
@@ -113,7 +114,7 @@ private:
     BitTorrent::TorrentInfo m_torrentInfo;
     QByteArray m_headerState;
     int m_oldIndex;
-    QScopedPointer<TorrentFileGuard> m_torrentGuard;
+    std::unique_ptr<TorrentFileGuard> m_torrentGuard;
     BitTorrent::AddTorrentParams m_torrentParams;
 };
 

src/gui/fspathedit.cpp

@@ -28,6 +28,8 @@
 
 #include "fspathedit.h"
 
+#include <memory>
+
 #include <QAction>
 #include <QApplication>
 #include <QCoreApplication>
@@ -74,7 +76,7 @@ class FileSystemPathEdit::FileSystemPathEditPrivate
     QString dialogCaptionOrDefault() const;
 
     FileSystemPathEdit *q_ptr;
-    QScopedPointer<Private::FileEditorWithCompletion> m_editor;
+    std::unique_ptr<Private::FileEditorWithCompletion> m_editor;
     QAction *m_browseAction;
     QToolButton *m_browseBtn;
     QString m_fileNameFilter;
@@ -192,7 +194,10 @@ FileSystemPathEdit::FileSystemPathEdit(Private::FileEditorWithCompletion *editor
     connect(d->m_browseAction, &QAction::triggered, this, [this]() { this->d_func()->browseActionTriggered(); });
 }
 
-FileSystemPathEdit::~FileSystemPathEdit() = default;
+FileSystemPathEdit::~FileSystemPathEdit()
+{
+    delete d_ptr;
+}
 
 QString FileSystemPathEdit::selectedPath() const
 {

src/gui/fspathedit.h

@@ -105,7 +105,7 @@ private:
     Q_DISABLE_COPY(FileSystemPathEdit)
     class FileSystemPathEditPrivate;
     Q_DECLARE_PRIVATE(FileSystemPathEdit)
-    QScopedPointer<FileSystemPathEditPrivate> const d_ptr;
+    FileSystemPathEditPrivate *d_ptr;
 };
 
 /// Widget which uses QLineEdit for path editing