remove spurious declaration of __getdents from readdir.c

[musl] / src / malloc / malloc_usable_size.c

diff --git a/src/malloc/malloc_usable_size.c b/src/malloc/malloc_usable_size.c
index 8cccd9d..6743ea7 100644 (file)
--- a/src/malloc/malloc_usable_size.c
+++ b/src/malloc/malloc_usable_size.c
@@ -13,5 +13,5 @@ struct chunk {
 
 size_t malloc_usable_size(void *p)
 {
-       return CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD;
+       return p ? CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD : 0;
 }