Break out of switch/case after handling launch_emergency.

This is causing strange crashes when launching emergency sos
such as this https://paste.googleplex.com/5437229469007872.

Fix: 173446123
Test: manual
Change-Id: I25a2f89de9072108ce53bf03162e040f6e6b5d95

packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java

@@ -1206,6 +1206,7 @@ public class CommandQueue extends IStatusBar.Stub implements CallbackController<
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).onEmergencyActionLaunchGestureDetected();
                     }
+                    break;
                 case MSG_SHOW_PICTURE_IN_PICTURE_MENU:
                     for (int i = 0; i < mCallbacks.size(); i++) {
                         mCallbacks.get(i).showPictureInPictureMenu();