Fix compiler warnings

src/wayland/compositor_interface.cpp

@@ -103,7 +103,7 @@ void CompositorInterface::Private::createSurface(wl_client *client, wl_resource
         return;
     }
     QObject::connect(surface->client(), &ClientConnection::disconnected, surface,
-        [surface] (ClientConnection *c) {
+        [surface] {
             if (surface->resource()) {
                 wl_resource_destroy(surface->resource());
                 delete surface;
@@ -128,7 +128,7 @@ void CompositorInterface::Private::createRegion(wl_client *client, wl_resource *
         return;
     }
     QObject::connect(region->client(), &ClientConnection::disconnected, region,
-        [region] (ClientConnection *c) {
+        [region] {
             if (region->resource()) {
                 wl_resource_destroy(region->resource());
                 delete region;

src/wayland/seat_interface.cpp

@@ -552,7 +552,7 @@ static quint32 qtToWaylandButton(Qt::MouseButton button)
         // further mapping not possible, 0x120 is BTN_JOYSTICK
     });
     return s_buttons.value(button, 0);
-};
+}
 
 bool SeatInterface::isPointerButtonPressed(Qt::MouseButton button) const
 {

src/wayland/server/logging.cpp

@@ -18,4 +18,4 @@ You should have received a copy of the GNU Lesser General Public
 License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 #include "logging_p.h"
-Q_LOGGING_CATEGORY(KWAYLAND_SERVER, "kwayland-server", QtCriticalMsg);
+Q_LOGGING_CATEGORY(KWAYLAND_SERVER, "kwayland-server", QtCriticalMsg)

src/wayland/tests/paneltest.cpp

@@ -132,6 +132,7 @@ void PanelTest::setupRegistry(Registry *registry)
                     auto p = m_seat->createPointer(this);
                     connect(p, &Pointer::buttonStateChanged, this,
                         [this] (quint32 serial, quint32 time, quint32 button, KWayland::Client::Pointer::ButtonState state) {
+                            Q_UNUSED(time)
                             Q_UNUSED(serial)
                             if (!m_windowManagement) {
                                 return;