windows: replace GetPhysicallyInstalledSystemMemory with ntdll.
`GetPhysicallyInstalledSystemMemory` uses SMBios to grab the physical
memory size which can lead to unecessary allocation and inacurate
representation of the total memory. Using `System_Basic_Information`
help to retrieve the physical memory which is not reserved for the
kernel/tables. This aligns better with the linux side as `/proc/meminfo`
does the same thing.
0733c8c5caxEgoist committed on 4/14/2023, 5:43:03 PM· committed by Andrew Kelleyparent7b908e1