What does "Control: reassign -1 libaqbanking44" mean?

[황병희 <soyeomul@doraji.xyz>]

Hi i am translator Debain webpage in Korean.

At bug mailing,
some user wrote in body of message [1] as below:

#+begin_src text
Control: reassign -1 libaqbanking44
#+end_src

In particular, i am curious the digit "-1".
For long time i was thinking about that the "-1".

Is that "subtraction"? or another meaning?

Oh please really my head is stiff..

Sincerely, Byung-Hee

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984980

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