message: fix(diskpart): Fix diskpart argv when tmpdir contains spaces
  This escapes the diskpart script filename when shelling out,
  to avoid failure when the username and thus the `os.tmpdir()` path
  contains spaces.
  Change-Type: patch
diff: @@ -69,7 +69,7 @@ const runDiskpart = (commands, callback) => {
  }, (writeError) => {
  debug('write %s:', filename, writeError || 'OK')
  - childProcess.exec(`diskpart /s ${filename}`, (execError, stdout, stderr) => {
  + childProcess.execFile('diskpart', [ '/s', filename ], (execError, stdout, stderr) => {
  debug('stdout:', stdout)
  debug('stderr:', stderr)
  