DSZone: send stackChanged Signal when there is a window on the list.

Change-Id: I1001aa81c92b4dbc0b2d5041e02fe0450aab46ea

diff --git a/src/DSZone/DSZone.cpp b/src/DSZone/DSZone.cpp
index c1027be..3973120 100644 (file)
--- a/src/DSZone/DSZone.cpp
+++ b/src/DSZone/DSZone.cpp
@@ -304,9 +304,11 @@ void DSZone::__destroyWindow(std::shared_ptr<DSWindow> window)
        __stackChanged = true;
        __updateWindowOrder();
 
-       std::shared_ptr<DSWindow> wTop(__windowList.front());
-       wTop->raiseToTop();
-       __windowStackChangedSignal.emit(wTop);
+       if (!__windowList.empty()) {
+               std::shared_ptr<DSWindow> wTop(__windowList.front());
+               wTop->raiseToTop();
+               __windowStackChangedSignal.emit(wTop);
+       }
 }
 
 void DSZone::__updateWindowOrder(void)