Fix no-opengl developer builds

Change-Id: I0c8fb7d0aa9a0d95a13447315bd8c1104089fed1
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

src/plugins/platforms/eglfs/api/qeglfsintegration.cpp

@@ -198,6 +198,7 @@ QPlatformBackingStore *QEglFSIntegration::createPlatformBackingStore(QWindow *wi
     static_cast<QEglFSWindow *>(window->handle())->setBackingStore(bs);
     return bs;
 #else
+    Q_UNUSED(window);
     return nullptr;
 #endif
 }

src/plugins/platforms/eglfs/api/qeglfsscreen.cpp

@@ -183,6 +183,8 @@ void QEglFSScreen::handleCursorMove(const QPoint &pos)
 
     if (enter && leave)
         QWindowSystemInterface::handleEnterLeaveEvent(enter, leave, enter->mapFromGlobal(pos), pos);
+#else
+    Q_UNUSED(pos);
 #endif
 }
 
@@ -231,7 +233,13 @@ QPixmap QEglFSScreen::grabWindow(WId wid, int x, int y, int width, int height) c
             return QPixmap::fromImage(img).copy(rect);
         }
     }
-#endif // QT_NO_OPENGL
+#else // QT_NO_OPENGL
+    Q_UNUSED(wid);
+    Q_UNUSED(x);
+    Q_UNUSED(y);
+    Q_UNUSED(width);
+    Q_UNUSED(height);
+#endif
     return QPixmap();
 }
 

src/plugins/platforms/minimalegl/qminimaleglintegration.cpp

@@ -132,6 +132,7 @@ QPlatformBackingStore *QMinimalEglIntegration::createPlatformBackingStore(QWindo
 #ifndef QT_NO_OPENGL
     return new QMinimalEglBackingStore(window);
 #else
+    Q_UNUSED(window);
     return nullptr;
 #endif
 }