message: Fix error when executing single command
diff: @@ -285,8 +285,7 @@ function executeCommand(index) {
  return browser.tabs.sendMessage(tabs[0].id, {
  commands: commandName,
  target: commandTarget,
  - value: commandValue,
  - mySideexTabId: mySideexTabId
  + value: commandValue
  }, {
  frameId: playingFrameLocations[tabs[0].id][currentPlayingFrameLocation]
  })
  