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countnode234() should politely return 0 when passed NULL. Was
[u/mdw/putty]
/
tree234.c
diff --git
a/tree234.c
b/tree234.c
index
1f02670
..
1aac3a6
100644
(file)
--- a/
tree234.c
+++ b/
tree234.c
@@
-90,6
+90,8
@@
void freetree234(tree234 *t) {
static int countnode234(node234 *n) {
int count = 0;
int i;
+ if (!n)
+ return 0;
for (i = 0; i < 4; i++)
count += n->counts[i];
for (i = 0; i < 3; i++)