Fix crash when long press directory

When long pressing a directory, the actions dialog will build an FSO
send intent to query if it can be handled by any application.  In this
case, the list of URIs to share will be 0, causing the crash.

FEIJ-1439
Change-Id: I3f500916774af4bde939bd42060d92070971663a
(cherry picked from commit 95c92cbf)