Don't crash when recovering from WM death

Bug: 6956162
Change-Id: I27244b960c77187b4c4cd7297989c4c872e94a3a
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index fbf2873..3a802ff 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -142,6 +142,8 @@
     Vector<ComposerState> state;
     Vector<DisplayState> displays;
     DisplayState d;
+    d.what = DisplayState::eTransformChanged;
+    d.token = mDefaultDisplays[DisplayDevice::DISPLAY_ID_MAIN];
     d.orientation = DisplayState::eOrientationDefault;
     displays.add(d);
     setTransactionState(state, displays, 0);