json: do not write string after #0 symbol
json: do not write string after #0 symbol

Signed-off-by: Sergey Linev <e975f594b5fd242373e09af42cc211e3844763a6@gsi.de>

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot