Missing some checks in the user program to add ?

[vletoux]

I found out there is a couple of checks missing.

First:
https://github.com/Velocidex/WinPmem/blob/master/kernel/executable/winpmem.cpp#L422
If there is no more space on the disk, WriteFile Fails, then copy_memory fails, then write_raw_image succeed.
The status is not propagated at the end of the program (the %ERRORLEVEL% var)

Second:
https://github.com/Velocidex/WinPmem/blob/master/kernel/executable/main.cpp#L189
if the driver install fails, status will be negative and the program will stop.
But the final status will not be propagated at the end of the program (the %ERRORLEVEL% var)