Laser - Fix seeker owner return value

[zharf]

When merged this pull request will:

• Fixes an issue with laser seeker return value mentioned here
• Chooses the owner with most hits instead of the last one in the hashmap iteration order

[PabstMirror]

Good fix,
I am curious what you're using this for.

IIRC long ago missile guidance was originally going to hand-off guidance to the laser owner
but as far as I can tell nothing in ace uses the owner value

[zharf]

I also found that nothing used it in ACE however I traced an issue in ITC AIR to this issue
https://github.com/YannikH/itc_air/blob/master/itc_air_tgp/functions/lss/search.sqf

Not sure if they should be using this either but ITC seems to be abandoned nowadays