[dwm] dmenu_path, again...

Hi,

the most recent [1]commit removed the part where the temporary cache
file was written, thus breaking the script. The attached patch fixes
this.

BTW, -maxdepth is not specified in SUSV3...

Regards, Jukka

[1] http://www.suckless.org/cgi-bin/hgwebdir.cgi/dmenu/diff/1fed9410fbc6/dmenu_path

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