Bug#1106246: confirm for trixie and 6.15.1

[M G Berberich]

Hello,

FYIO: as expected, building against 6.15.1 fromon trixie fails also.
Replacing del_timer_sync by timer_delete_sync makes it compile.

        MfG
        bmg

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„Des is völlig wurscht, was heut beschlos- | M G Berberich
 sen wird: I bin sowieso dagegn!“          | m...@m-berberich.de
(SPD-Stadtrat Kurt Schindler; Regensburg)  |