clearkey hidl: fix oob read in decrypt

Validate sum of subsample sizes do not overrun source buffer.

Bug: 154123412
Test: poc_CryptoPlugin_cpp_183
Test: MediaDrmClearkeyTest
Test: NativeMediaDrmClearkeyTest
Change-Id: I27b05479202e0caedfd052c683aa1ef187f65679
Merged-In: I27b05479202e0caedfd052c683aa1ef187f65679
1 file changed