random_string() loses references to the empty string.
Imported from https://youtrack.roxen.com/issue/PIKE-21
Reported by @grubba
Blocking PIKE-20
Calling random_string() with 0 caused the empty string to lose a reference.
Imported from https://youtrack.roxen.com/issue/PIKE-21
Reported by @grubba
Blocking PIKE-20
Calling random_string() with 0 caused the empty string to lose a reference.