Fix null intent handling

This also fixes the potential crash when handling intent
with null action string.

BUG=28689719
TEST=compile
TEST=runtest frameworks-wifi

Change-Id: I6ef3e07e38f33d8c5040dd358f161224095189d6
1 file changed
tree: 4e745b87e47f08bf42bf3bd30d1942b62e259503
  1. service/
  2. tests/