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-rw-r--r--render/box.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/render/box.c b/render/box.c
index 369fe90b9..7e0df2483 100644
--- a/render/box.c
+++ b/render/box.c
@@ -452,7 +452,7 @@ void box_dump(struct box *box, unsigned int depth)
fprintf(stderr, " next_float %p", box->next_float);
fprintf(stderr, "\n");
- for (c = box->children; c->next; c = c->next)
+ for (c = box->children; c && c->next; c = c->next)
;
if (box->last != c)
fprintf(stderr, "warning: box->last %p (should be %p) "