On second though, NEXITFUNCS should be defined in pythonrun.c and not
here; pystate.h doesn't use it (I thought I wanted to move the array
there but that won't work).
diff --git a/Include/pystate.h b/Include/pystate.h
index b061fbf..7218cc0 100644
--- a/Include/pystate.h
+++ b/Include/pystate.h
@@ -40,8 +40,6 @@
 
 /* State shared between threads */
 
-#define NEXITFUNCS 32
-
 struct _ts; /* Forward */
 struct _is; /* Forward */