Fix integer underflow in ESDS processing

Several arithmetic operations within parseESDescriptor could underflow, leading
to an out-of-bounds read operation. Ensure that subtractions from 'size' do not
cause it to wrap around.

Bug: 20139950

(cherry picked from commit 07c0f59d)
(cherry picked from commit 96bd564f)

Change-Id: Iedac935b958223b486c2500546a9aa3a8fe10608