diff -r 04c53b3c8378 -r 13068743197f src/cx/tree.h
--- a/src/cx/tree.h	Sun Feb 18 21:12:28 2024 +0100
+++ b/src/cx/tree.h	Mon Feb 19 22:08:09 2024 +0100
@@ -119,6 +119,7 @@
  */
 static inline void cxTreeIteratorDispose(CxTreeIterator *iter) {
     free(iter->stack);
+    iter->stack = NULL;
 }
 
 /**