gitk doesn't quit

[Alan Aversa <alan_aversa@xxxxxxxxxxx>]

To quit gitk, I have to invoke ctrl-c from the command line. I get this
error when trying to quit gitk with ctrl-q or from the GUI menu:

-- 
☧


error writing "stdout": I/O error
error writing "stdout": I/O error
    while executing
"puts "Error saving config: $err""
    (procedure "savestuff" line 90)
    invoked from within
"savestuff ."
    (procedure "doquit" line 6)
    invoked from within
"doquit"
    invoked from within
".#bar.#bar#file invoke active"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 [list $w invoke active]"
    (procedure "tk::MenuInvoke" line 50)
    invoked from within
"tk::MenuInvoke .#bar.#bar#file 1"
    (command bound to event)

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