ntdll: Fix syscall_cfa offset in user_mode_abort_thread for ARM64.
Otherwise sending ^C to a running ARM64 process crashes it randomly.
Note that 0x110 is prev_frame, the field that immediately precedes syscall_cfa.
Fixes: ca79629b
Otherwise sending ^C to a running ARM64 process crashes it randomly.
Note that 0x110 is prev_frame, the field that immediately precedes syscall_cfa.
Fixes: ca79629b