Fix warnings about unused parameters.

Change-Id: I091a0369f2026ae820d623aadd13a3190d40a56b
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

src/quick/items/qquickmultipointtoucharea.cpp

@@ -565,6 +565,8 @@ void QQuickMultiPointTouchArea::setTouchEventsEnabledForWindow(QWindow *window)
     // Save the current window, setTouchEventsEnabledForWindow will be called
     // with a null window on disable.
     _currentWindow = window;
+#else // Q_OS_MAC
+    Q_UNUSED(window)
 #endif
 }
 

src/quick/items/qquickpincharea.cpp

@@ -562,6 +562,8 @@ void QQuickPinchArea::setTouchEventsEnabledForWindow(QWindow *window)
     // Save the current window, setTouchEventsEnabledForWindow will be called
     // with a null window on disable.
     _currentWindow = window;
+#else // Q_OS_MAC
+    Q_UNUSED(window)
 #endif
 }