Move member variable initialization

Move the initialization from constructor body to member initializer
list.
Remove superfluous initializer.

src/gui/banlistoptionsdialog.cpp

@@ -41,10 +41,10 @@
 BanListOptionsDialog::BanListOptionsDialog(QWidget *parent)
     : QDialog(parent)
     , m_ui(new Ui::BanListOptionsDialog)
+    , m_model(new QStringListModel(BitTorrent::Session::instance()->bannedIPs(), this))
     , m_modified(false)
 {
     m_ui->setupUi(this);
-    m_model = new QStringListModel(BitTorrent::Session::instance()->bannedIPs(), this);
 
     m_sortFilter = new QSortFilterProxyModel(this);
     m_sortFilter->setDynamicSortFilter(true);

src/gui/executionlogwidget.cpp

@@ -39,12 +39,11 @@
 ExecutionLogWidget::ExecutionLogWidget(QWidget *parent, const Log::MsgTypes &types)
     : QWidget(parent)
     , m_ui(new Ui::ExecutionLogWidget)
+    , m_msgList(new LogListWidget(MAX_LOG_MESSAGES, Log::MsgTypes(types)))
     , m_peerList(new LogListWidget(MAX_LOG_MESSAGES))
 {
     m_ui->setupUi(this);
 
-    m_msgList = new LogListWidget(MAX_LOG_MESSAGES, Log::MsgTypes(types));
-
 #ifndef Q_OS_MAC
     m_ui->tabConsole->setTabIcon(0, GuiIconProvider::instance()->getIcon("view-calendar-journal"));
     m_ui->tabConsole->setTabIcon(1, GuiIconProvider::instance()->getIcon("view-filter"));

src/gui/transferlistfilterswidget.cpp

@@ -561,7 +561,6 @@ QStringList TrackerFiltersList::getHashes(int row)
 TransferListFiltersWidget::TransferListFiltersWidget(QWidget *parent, TransferListWidget *transferList)
     : QFrame(parent)
     , m_transferList(transferList)
-    , m_trackerFilters(nullptr)
 {
     Preferences *const pref = Preferences::instance();