my personal dwl config managed with pijul.

Revert "remove useless check of `m` in arrangelayers()"

This partially reverts commit d14ee99661e420c8e3d8fcc6791429a0e08bd915.

Checking if the output is enabled is necessary to avoid a segfault later

Created by  Leonardo Hernández Hernández  on September 18, 2022
CIK43I2KCDKASBSQEUPL4LHAIYTFRZ52RVNR4GWY4CW3YVKIHKDAC
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