bare-metal: Return initializier lists instead of ctors

Change-Id: Ifc764130ca9c20f77ae1e1549fddba41a900150a
Reviewed-by: hjk <hjk@qt.io>

src/plugins/baremetal/baremetaldevice.cpp

@@ -182,7 +182,7 @@ IDevice::Ptr BareMetalDeviceFactory::create() const
 {
     BareMetalDeviceConfigurationWizard wizard;
     if (wizard.exec() != QDialog::Accepted)
-        return IDevice::Ptr();
+        return {};
     return wizard.device();
 }
 

src/plugins/baremetal/gdbserverprovider.cpp

@@ -133,12 +133,12 @@ void GdbServerProvider::setResetCommands(const QString &cmds)
 
 QString GdbServerProvider::executable() const
 {
-    return QString();
+    return {};
 }
 
 QStringList GdbServerProvider::arguments() const
 {
-    return QStringList();
+    return {};
 }
 
 bool GdbServerProvider::operator==(const GdbServerProvider &other) const

src/plugins/baremetal/openocdgdbserverprovider.cpp

@@ -105,7 +105,7 @@ QString OpenOcdGdbServerProvider::channel() const
         return args.join(QLatin1Char(' '));
     }
     default: // wrong
-        return QString();
+        return {};
     }
 }
 

src/plugins/baremetal/stlinkutilgdbserverprovider.cpp

@@ -83,7 +83,7 @@ QString StLinkUtilGdbServerProvider::defaultInitCommands()
 
 QString StLinkUtilGdbServerProvider::defaultResetCommands()
 {
-    return QLatin1String("");
+    return {};
 }
 
 QString StLinkUtilGdbServerProvider::typeDisplayName() const
@@ -101,9 +101,9 @@ QString StLinkUtilGdbServerProvider::channel() const
         return m_host + QLatin1Char(':') + QString::number(m_port);
     case StartupOnPipe:
         // Unsupported mode
-        return QString();
+        return {};
     default: // wrong
-        return QString();
+        return {};
     }
 }