some "internal" instructions are build dynamically, as with
unlang_module_push(). The instruction number there will be
zero, as there's currently no way to track these dynamic instructions.
As a result, we want to reserve array entry 0 as the canonical
"dynamic" instruction number, which won't get their stats tracked.
#define UNLANG_IGNORE ((unlang_t *) -1)
-static unsigned int unlang_number = 0;
+static unsigned int unlang_number = 1;
/*
* For simplicity, this is just array[unlang_number]. Once we