Prevent MediaScanner infinite loop with invalid path

including double slash  "/storage/sdcard0/xx//xxx/xxxx"

Change-Id: I112a70c88b5ec662482b79c3151310b9b9b52e40
Frameworks: Prevetn Multi-Window If HALO is enabled

Signed-off-by: Arnav Gosain <nolinuxnoparty@gmail.com>
Frameworks: mutliwindow: notify split view if layout changed