Fix broken attack of GLA Bomb Truck

[psykana]

Fixes #888.

Weapon templates from #888 (IDs 1265 and 1267) don't damage enemies directly, but rather kill themselves and deal damage with Object::On_Die effects. Due to an incorrect coordinate here (probably a typo), damage doesn't apply and nothing happens.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 2.53%. Comparing base (54999d2) to head (84f7b30).

Files	Patch %	Lines
src/game/logic/object/weapon.cpp	0.00%	1 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1127   +/-   ##
========================================
  Coverage     2.53%    2.53%           
========================================
  Files          949      949           
  Lines       110747   110747           
  Branches     18995    18995           
========================================
  Hits          2802     2802           
  Misses      107542   107542           
  Partials       403      403           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.