Do not crash all the time with shm apps

Change-Id: Iea42adf18cbd724f1f9dc19ec1d1f6baeff07d97
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/plugins/platforms/wayland/qwaylandwindow.cpp b/src/plugins/platforms/wayland/qwaylandwindow.cpp
index c023de58e..5635322f0 100644
--- a/src/plugins/platforms/wayland/qwaylandwindow.cpp
+++ b/src/plugins/platforms/wayland/qwaylandwindow.cpp
@@ -228,11 +228,12 @@ const wl_callback_listener QWaylandWindow::callbackListener = {
     QWaylandWindow::frameCallback
 };
 
-void QWaylandWindow::frameCallback(void *data, struct wl_callback *wl_callback, uint32_t time)
+void QWaylandWindow::frameCallback(void *data, struct wl_callback *callback, uint32_t time)
 {
     Q_UNUSED(time);
-    Q_UNUSED(wl_callback);
     QWaylandWindow *self = static_cast<QWaylandWindow*>(data);
+    if (callback != self->mFrameCallback) // might be a callback caused by the shm backingstore
+        return;
     self->mWaitingForFrameSync = false;
     if (self->mFrameCallback) {
         wl_callback_destroy(self->mFrameCallback);