Name Mac twin of ITEM_HandleWeaponSwitchItems
Mac 0x00103137 (default FUN_00103137) is the Mac build of Win 0x004c3980 ITEM_HandleWeaponSwitchItems. Identical packet offsets (owner at +9/+8, item id at +4, details at +0xd), identical assert line numbers (inv-null 0x753/1875, non-reload 0x755/1877, create-null 0x765/1933), identical slot logic (3, or 4 for body-loc 0xb/0xc), identical arm branch (body-loc 4/5 -> primary weapon update), and the same double recalc call. Its own comment says 'no Windows twin'; the Win function refutes that. House rules: paired functions end with the same name; Windows is ground truth.
Changes 1, applied together
Rename function
mac 0x00103137nameFUN_00103137→ITEM_HandleWeaponSwitchItems