#2023 stats command crashes when using column label and name columnheader

[Anonymous]

    G N U P L O T
    Version 5.2 patchlevel 2    last modified 2017-11-15 
    Windows 64-bit version (installer: gp522-win64-mingw.exe)

    this works:
    n = 'banana'
    stats 'test.csv' using n name n

    this also works:
    stats 'test.csv' using 1 name columnheader

    this causes gnuplot to crash:
    stats 'test.csv' using 'banana' name columnheader

[Ethan Merritt]

Confirmed for 5.2; not a problem in 5.3 because the columnhead code has been reworked.
Simple-minded fix will be in 5.2.3