Fix NPE crash in AppInfoBase

This crash can hardly happen under the normal operation of the user,
but it may have a chance to appear in monkey test. To enhance the 
robustness of the program, intent.getData() here should not be null 
in any situations.

Bug: N/A
Test: adb shell am start -n
'com.android.settings/.Settings\$AppDrawOverlaySettingsActivity'

Change-Id: I732b564056e3e585405f146d99efe3b410edbc41
Signed-off-by: tiansiming <tiansiming@xiaomi.com>