Fix unit_attack_*_at_tile_result() header length
Fix the line length of the function headers of unit_attack_unit_at_tile_result(), unit_attack_all_at_tile_result(), unit_attack_any_at_tile_result() and unit_attack_units_at_tile_result().
Fix the line length of the function headers of unit_attack_unit_at_tile_result(), unit_attack_all_at_tile_result(), unit_attack_any_at_tile_result() and unit_attack_units_at_tile_result().