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'strdup' doc [1] mentions: "The returned pointer must be passed to 'free' to avoid a memory leak." This silences a "Mismatched free() / delete / delete []" error that valgrind outputs. [1] https://en.cppreference.com/w/c/experimental/dynamic/strdup Change-Id: I28877be762256a7b995c09415a8ad9977b7998c4 Reviewed-on: https://gerrit.libreoffice.org/77974 Tested-by: Jenkins Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>