HaikuDepot : Fix Compile Warnings

Change-Id: I3f44eb33d26c1236de2b132a27ca3ad4ddb0bbc1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7298
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

HaikuDepot: Loading Pkg File Size

This change will move the loading of packages' file size
to a latter phase as HaikuDepot starts up as a separate
step. This way it can only load sizing for those packages
which do not have a size from HaikuDepot Server -- which
should be very few. This gives a circa 10-15% performance
improvement on the phase where the local HPKR catalogue
of packages is populated.

Change-Id: I52055ecaa79f9819e70b469134e5b94636f02b13
Reviewed-on: https://review.haiku-os.org/c/haiku/+/7095
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>