message: also pretend GetSystemTimePreciseAsFileTime does not exist
diff: @@ -26,6 +26,7 @@ impl Dlsym {
  "windows" => match &*name {
  "SetThreadStackGuarantee" => None,
  "AcquireSRWLockExclusive" => None,
  + "GetSystemTimePreciseAsFileTime" => None,
  _ => throw_unsup_format!("unsupported Windows dlsym: {}", name),
  }
  os => bug!("dlsym not implemented for target_os {}", os),
  