Fix one issue on glasses disconnect

kwin/src/qml/BreezyDesktop.qml

@@ -178,6 +178,8 @@ Node {
 
             // only for the Rectangle geometry fallback
             property vector3d rectangleFallbackScale: {
+                if (!sizeAdjustedScreen) return Qt.vector3d(1, 1, 1);
+                
                 const geometry = sizeAdjustedScreen.geometry;
 
                 // default geometry unit size is 100x100, so we scale it up to the screen size

modules/XRLinuxDriver

@@ -1 +1 @@
-Subproject commit 7cf5924771b01bccf6d8d8ab0a9a38d3aa37babb
+Subproject commit b74587dfc17e85c63ee03fdbdd8f2541400f454f