Summon Command Acts like Magicite

alternatively, i wonder what happens if you have the C2/4D9C hook instead put a null ID [EDIT: FFh - 36h, rather] (or something outside the Esper range, at least) in top of A.  if that doesn't break the queuing or anything else, maybe have the C2/19C7-linked function test for that instead.

Admittedly, I haven't looked at any of the code, but changing A or B can have unforeseen consequences down the line if not restored... I ran into something similar doing magic expansion where I was breaking availability of spells in the menu 3 functions down the line because there was a value stored in B and the code ran an 8-bit A for a while keeping B in tact for a LONG time. but worth a test for sure.