The trainer ID randomization doesn't work, it's always 00001

Both Mewdistro and Celebidistro don't give a randomized ID each time you trade or `make`.

Line 315 `pPartyMember->original_trainer_id = (randw() % 65535) + 1;` always resolves as 0 + 1, so the function is not working as expected. You can manually set the value you want by replacing 1 for the desired ID which is useful, but still code made me believe the original purpose was a randomized ID.

Also note that 00000 is a possible ID, so there is no need to give + 1 and just a number from 00000 to 65535 will be valid.