func_ladder: restore the model string unset in WarpZoneLib_ExactTrigger_Init()
This was previously done by trigger_init() and should have been included in 2b46f62d
The only other entities using trigger_init() were trigger_impulse and trigger_push, but those use touch funcs whereas func_ladder uses a think func to search.
Fixes #2838 (closed)
Edited by bones_was_here