Give back lightspark on arm64

[Anton Gladky <gladk@debian.org>]

It looks like a strange bug. The bug itself is fixed
in lightspark/0.7.2-6, but filed against this version of
the package.

WB-team, please give back this package on arm64.
I have just checked it on asachi.debian.org and it builds
fine.

gb lightspark_0.7.2-6 . arm64

Thanks

Anton