Prevent integer overflow in ResourceTypes

Adds checks to 2 malloc() calls to ensure that the finally allocated
buffer size is not vulnerable to integer overflows. Also includes a
sanity check on the upper bound for type_info.numEntries before each
call.

Bug: 15171384
Change-Id: Ifdf0276bcca7e3d93da7c3577b9486d3c03a9d03