Problem description

termux-dialog sheet crashes if no option is chosen

Steps to reproduce

termux-dialog sheet -v 'Item One','Item Two' will crash if the user clicks out of the dialog prompt (choosing neither one nor two)

Expected behavior

I believe that it used to properly output -1 in the json index like this:

{
  "code": -1,
  "text": "",
  "index": -1
}

Additional information

• termux-api application version: 0.50.1 (51)
• termux-api package version (installed through apt): 0.57
• Android OS version: 11
• Device model: moto g play (XT2093DL)
• target-sdk: 28

Copied from crash_log.md

Crash Message:

Attempt to invoke virtual method 'android.os.IBinder android.view.View.getWindowToken()' on a null object reference

The stacktrace is long so I won't post unless its needed