Descent 3 Build

Resolve 2 UBSAN warnings about uninitialized vars; establish allocation/type check along with it #1788

Annotations

10 warnings

'<': signed/unsigned mismatch

'=': conversion from 'size_t' to 'int', possible loss of data

'initializing': conversion from 'size_t' to 'int', possible loss of data

'return': conversion from 'size_t' to 'int', possible loss of data

'type cast': pointer truncation from 'void *' to 'uint32_t'

'type cast': truncation from 'void *' to 'uint32_t'

'argument': conversion from 'size_t' to 'DWORD', possible loss of data

'e': unreferenced local variable

'e': unreferenced local variable

'e': unreferenced local variable