this is expressed better as a for loop
diff --git a/Objects/genobject.c b/Objects/genobject.c
index 3fa1b4e..cb2980c 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -395,15 +395,13 @@
int i;
PyFrameObject *f = gen->gi_frame;
- if (f == NULL || f->f_stacktop == NULL || f->f_iblock <= 0)
+ if (f == NULL || f->f_stacktop == NULL)
return 0; /* no frame or empty blockstack == no finalization */
/* Any block type besides a loop requires cleanup. */
- i = f->f_iblock;
- while (--i >= 0) {
+ for (i = 0; i < f->f_iblock; i++)
if (f->f_blockstack[i].b_type != SETUP_LOOP)
return 1;
- }
/* No blocks except loops, it's safe to skip finalization. */
return 0;