--- libmalloc/libmalloc-409.40.6/src/magazine_inline.h
+++ libmalloc/libmalloc-409.81.2/src/magazine_inline.h
@@ -754,9 +754,6 @@
 #pragma mark zero on free
 
 MALLOC_NOEXPORT
-extern bool malloc_zero_on_free;
-
-MALLOC_NOEXPORT
 extern unsigned malloc_zero_on_free_sample_period;
 
 static MALLOC_INLINE bool