Fix NPE in PopupMenu.getDragToOpenListener()
Fix NPE in PopupMenu.getDragToOpenListener()

BUG: 10912382
Change-Id: I206e697b4781c4d03ebc01aa675511d89c1656af

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base