Fix heap_getattr() handling of fast defaults.
Previously heap_getattr() returned NULL for attributes with a fast
default value (c.f. 16828d5c0273), as it had no handling whatsoever
for that case.
A previous fix, 7636e5c60f, attempted to fix issues caused by this
oversight, but just expanding OLD
Fix heap_getattr() handling of fast defaults.
Previously heap_getattr() returned NULL for attributes with a fast
default value (c.f. 16828d5c0273), as it had no handling whatsoever
for that case.
A previous fix, 7636e5c60f, attempted to fix issues caused by this
oversight, but just expanding OLD
