Check the HCI length before extracting the L2CAP length and CID

Bug: 34946955
Test: A2DP streaming to a headset
Change-Id: I0b6f50dee05a58db8c043b4d01fb58c9acbeede9
(cherry picked from commit ecc0835114cbae3033d8b0e25bd8b443880d5077)
1 file changed