menu-cache: Fix segmentation fault

[YOCTO #4353]

(From OE-Core master rev: 8c9c6155e6d83675a94b4eaae4ffc6dfeca399ee)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
systemd: don't install quotaon.service twice

If the same file is installed twice there's a race which can lead to "make
install" failing.  Remove the redundant installation of quotaon.service to
eliminate the race.

(From OE-Core master rev: c6c5c2285e1b6cb3598ccba08aee3dfd090e7129)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>