scopedAllocPop

Given a value returned from scopedAllocPush(), this "pops" that allocation scope and frees all memory allocated in that scope by the scopedAllocXyz() family of APIs.

It is technically legal to call this without any argument, but passing an argument allows the allocator to perform sanity checking to ensure that scopes are pushed and popped in the proper order (it throws if they are not). Failing to pass an argument is not illegal but will make that sanity check impossible.